Sooner or later, you will get trapped somewhere forever. Over the course of an infinite lifespan, the odds that a building collapses on you or a tunnel caves in on you basically become 100%. Someday, you will fall into the hole that you will stay in until the sun explodes, and then you will drift in the void until the heat death of the universe.
Lots of good advice here, but I would just add, start with your interests and work out from there. You like puzzle games? Portal is a great physics puzzle game, so you might like that. It’s also a 3D platformer, so you’ll find out if you like games with a lot of running and jumping. It’s also technically a first-person shooter (not in the sense that you shoot enemies, but you do shoot a portal gun at walls), so if you don’t like that aspect of the game, you’ll know that FPSs aren’t for you.
Doesn’t have to be the type of gameplay either. You like designing things? Maybe try the Sims or Animal Crossing. Like horror movies? Maybe start with something simple but creepy, like Limbo. Detective stories? Something like Strange Horticulture might be up your alley.
The most important thing is to look around and see what catches your interest. Read some reviews, watch some gameplay footage, and find something that’s right for you. Don’t just say, “I’m going to do video games now,” and buy a Call of Duty or Dark Souls because, “gamers,” like them.