I just suggested you buy the parts of amazon and aska pc shop to make it with said parts for you. The problem with finding someone that does costum builds is the easy 300$ price premium you pay and you can still end up with questionable quality parts.
So if you could manage to find me a site that builds the pc and sends it to you, that also supports finance that'd be great
Well I build my pc as a 10 year old before youtube even existed so it's really not hard at all.
However the best course of action for you if you don't build it yourself is to ask us for a partslist, buy said parts and then find a local pc shop that will build it for you.
I just suggested you buy the parts of amazon and aska pc shop to make it with said parts for you. The problem with finding someone that does costum builds is the easy 300$ price premium you pay and you can still end up with questionable quality parts.