You have a few Sentences doubled in here, i suppose from rethinking the Wording. Might want to clean those up and re-upload the Chapter. Otherwise, pretty good read

I like the story but was disappointed he agreed with Dumbledore

Damn, I've put off this story for a year. Just came to check progress and it's still on damn 3rd year.

Damn, maybe I'll come back 3 years later for more progress. Keep up the work. Bye for now.

Honestly Dumbledore seems completely reasonable here - a 12 year old wandering around knockturn is asking for trouble. Also telling him that Sirius is actually innocent has literally no downside as far as I am concerned.

Harry acting like a 13 year old idiot does make sense though so fair enough.

Okay not to all future readers don't just skip to the end of this chapter because you find the Rita part boring and or stupid... Because that ending is awkward otherwise my god! Phrasing my dude phrasing... That's all I'll say

"To avoid giving anything away for the time being, Harry had his clothes charmed to look like casuals, and wore a baseball cap with sunglasses."

Pfft hahahaha man doesn't even know how much that stands out! Trying to act casually he's standing out more then a sore thumb. What a crappy disguise but I suppose he's forgiven because he's still a child

Yea I don't think wronger is a word. If you say it out loud and wronger? And more wrong? The second one sounds the most natural of the two but the English language is a convoluted mess! So wronger could be a word

Oh boy... This story is developing nicely so far but this chapter was rather cringe worthy especially that ending oof...

Also WHEN THE FUCK DID RON AND HERMIONE KNOW ABOUT PETER AND THEN LET HIM GO!) you can't just do something like that in the background then throw it out part way through? You want to progress the story faster but then one of the most important things happens off screen! The fuck!

You dyed his hair?... Pfft lmao that's so fucking stupid and to such a shit colour too. I can promise you no one is picturing his hair that colour and at the very least I sure as hell won't. Completely ridiculous

If the Wesley's haven't left for Egypt then Sirius shouldn't of escaped? Seeing as it's seeing them in the new with the rat that makes him want to escape in the first place. What reason does he have to escape now? Nothing that's what

Why are they leading it away? Did they forget harry could just talk to the snake and distract it or turn it against the ghoul at best?

I haven't read this chapter but there is no such thing as a posh modern English home during the 80! They were and still are shitty gray squares on shitty gray squares sometimes they come in cream or brown but still shitty and square. Definitely not posh! Lmao stick with the older style buildings known in the wizarding world. They are far far nicer and better looking even when stuck in the ground or twisted my trees.

I thought the other guy was having a laugh... You actually put gandalf? Madness. Though ten chapters in and not much change in style not looking good. But the story is at least interesting enough for your style of writing and major plot holes not to put me off. I read all of harry potter once after all, I'm use to it

If this is you trying to trim plot holes and and make it easier to ready I'd hate to see the old version it's just another chapter of harry being told everything by another person who shouldn't and couldn't know these things yet simply does because you decide fuck it. And I see three massive plot holes here the biggest one being why the fuck would the goblins know and guess how black was framed so perfectly? If you want to make it believable next time I'd recommend not having a full paragraph of the goblin explaining the entire scheme perfectly, make them think something else and something more believable then what actually happened. Because that's why people thought it was black because the actual way it happened was so unbelievably it was pretty much laughed at and pushed aside.

But let's get into the plot holes
1. There entire reason thinking black is innocent could easily prove he's not! Why is no one questioning it? They just go "it's impossible! Unless?" The way you explained it my counter points would be black knew harry would be killed by the dark lord there for didn't mind making him his heir as it assumed he would be died soon anyways and if he made him heir he could deepen his cover as a spy? Him being the heir means feck all it's why most people don't go that road.
2. If black could not have children why the fuck is he the actual heir? You'd think magic has a way of knowing this and seeing as some random gobo knows I'm assuming the old head of house black sure as hell knew before black ran off, so what absolutely brain dead moron would name the one person who CAN'T actually continue the family name the one person to continue the family name? That just dumb.
3.
"Young wizard, think. Who would've become the death eaters' number one target if Voldemort found out Sirius Black was new Lord Black?"
This line right here! This is a plot hole because people assumed black was the secret keeper people know the potters went into hiding people know voldy wanted them (still don't know how people knew this in the actual books but that's JKs plot hole not yours)
Black already had a giant ass target on his back all death eaters already wanted the man as that was the original plan. Wouldn't this there for actual help taking pressure off wormtail and then something black would have done?

Hopefully you have better expressions for the goblins then they "stood slack jawed mouth wide open" it's all they seem to be doing