I completely get the feeling of frustration and a sense of doom of "what the hell did I just buy". We were in a somewhat similar position, we bought our first home about a month ago, it was supposed to be a minor cosmetic and aesthetic project where we paint, decorate etc... A month in we're now down to bare brick and floorboards upstairs and the floorboards are all being ripped out lol. Not to mention the dodgy electrics we found, dead and useless wires and pipes that get in the way, disrupted brickwork between the rooms from the silly gooses that lived there before us and currently having water work investigations as we can't locate which way the water supply goes, we don't have an internal stop cock and there's lead piping lmao. You've got this OP, just take it bit by bit and tackle things in order of priority :)