I've got a bit of a system.
I'll add games into my 'To-do' list/Group on whatever system I happen to be playing on. Then eventually get around to spending half an hour with it. If I enjoy it, I'll keep playing until it's done or I've decided I've had my fill.
If I've decided I'm enjoying it, but don't have the time or that I'm not in the right headspace for it, the game moves into my 'I'm not done with you' list/group; and I'll eventually find the time for these games... eventually. Games like Hollow Knight and Outer Wilds have come out of this group, and I've enjoyed them greatly.
If I don't enjoy that half an hour, I usually ditch the game entirely and it gets thrown into the metaphorical trash bin, never to be heard from again.
Why half an hour? Well, I don't have much time so the idea of spending 3-4 hours of time to see if a game is worth my time is..kinda impossible for me. The thirty minutes gives me a little time to evaluate if I'm interested in continuing, whilst also forcing me to actually play some of these games.
What's your system?