Ask your mom about grinding she can tell you about it trust me ik
hypixel skyblock (minecraft), chek it out it really a well developed game
europa universalis 4 ladder or GSG games
Real life, you should try it.
doom 2016 and doom eternal
wanna grind? play shattered web missions, go get them 200 kills!
its not for me but animal crossing is a great way to lose track of time and play for hours