The house we bought 16 years ago we still live in now , a very similar story of the Sunday DIYer lived here previously, my lord we’ve uncovered some mess , I think the worst of all was the lighting cables in the kitchen ceiling, luckily it was one of our first jobs to uncover , my pal who did the electrics was surprised the house hadn’t been on fire ! , I’ve got lots of friends who’ve also bought ex DIYer houses it takes a while but you’ll get there , keep going it’ll be your masterpiece