MacBook air self repair failure

Really depressed today I just want to vent.

I have a 2015 macbook air which has dents and everything worked fine except for the keyboard, ordered the keyboard part online and tried to fix myself but I couldn't.

The bottom cover didn't lodge in properly so screws kept coming off, doesn't help by the dented sides. Was able to remove everything except the speakers and the black cloth like substance covering the keyboard which I was too scared to remove (further)

Took it to third party and had him fix it for 60 dollars equivalent in American currency.

Also to note that my macbook smells funny before and after the repair (smells like electricity I can't describe it more accurately)

How I wish I was decently adept in fixing electronics like many in this sub and online, to save money.

Don't have anybody in my family or circle who knows electronics repair.