Free Beer:
You started off with random voting, then was one of the first to start the investigations. That's a Good Thing.
The 'you are rolefishing' was a stretch, however, there wasn't much of a reason to ask for a roleclaim here. The only answer would've been Townie, which would show nothing. The "we're sure you aren't townie so you just claimed scum" was a VERY bad stretch. You didn't explain why he wasn't a townie. Yes, he answered the question poorly, but that's not enough to lynch: only enough to keep more pressure on them. Being overly 100% sure of your lynch being scum is also dangerous:
I did the same thing. I had accused two people of being mafia based on the information I pulled. I was somewhat sure of on, but I was "100% sure" of the other. I was so sure that, when tugged, I gave up a true, blue mafia lynch (the 'somewhat sure') to go after someone I KNEW was mafia.
Turned out the one I was gunning for was the Doctor.
Also, the one that 'nugged' me which caused me to change focus: it was the other mafia.
There's "you smell funny" which should bring about questions/accusations. There's "I'm ready to see you die" which should bring about the demand to lynch. Then there's "I KNOW YOU are scum!". When you get there, you need to pull back because you're lynching a townie.
The point to aim for is "Even if there's a chance at it, I can't see him as anything else. I'm ready to bet our chances that he's scum." Note there's still the 'shadow of a doubt there'. You keep that so that if your argument starts to falter by someone else's debate, you'll be willing to pull back. Of course, so long as your argument stands you push to kill. Never, though, get to the point where Nothing will convince you otherwise.
Honestly, that shouldn't have killed you, but by then the mafia got the town to lock on you and Seph. That way, either the town follows you and kills a townie, or goes against you and...kills a townie.
You see what he did there?
Btw, the bit about debating Sonearage's RL situation isn't helpful, but just distracting. How a person treats their RL self does NOT determine how their Mafia game face will be. Sonearage could be a 70 year old male body builder with 5 mistresses and it says NOTHING about whether she is scum or town.