As said - depends very much on what you are going to tackle
BUT maybe worth looking at this video - for DIY carpentry work, hand tools
i have most and used for general DIY over the years
i have now invested in some of the Wera tools kits , expensive , but i find i use these kits a lot now
Then you have power tools , for DIY again probably a combi drill , and maybe an impact drive - think about this , as cordless , you dont want lots of different battery systems, so worth investing in one platform with a large number of Bare tools available
Plumbing, again youtube video available on DIY tools needed for that sort of work
Lidl & Aldi - often have tools that maybe worth purchasing , I have quite a few - BUT not power tools
Often makes like Dewalt and Makita come on offer at places like toolstation and
screwfix , with batteries and charges