I solved this problem by just adding any game I want to my wishlist instead of my backlog and then wait until there is a big discount (50% or more) on the game...
I don't know why stopped doing that, I don't recall prices to rise as much like console games to be a reason to stop my behavior, but I for sure got a lot of games for free from Epic lol.
I tried to be good and play a couple of free games from Epic that I never tried / abandoned. One, the jump button was seemingly irreversably linked to the dodge button (Pine), the other immediately crashed after a minute of play, reminding me why I uninstalled it.
Borderlands 3 was heavily discounted to £8, a fair compromise, I felt!
I honestly been buying old games lately just out of fear of shitty companies removing it from the store rather than stuff I would really like to play now. Not that those games are bad and I dont' want to play them, but I don't want to only play 20 year old games.