It strongly depends on what kind of person you are and how you get your enjoyment out of things. If you understand this, then you can find games that fulfill that.
For example, some people get a dopamine hit when they see numbers go up. Be it level grinding, kill/death ratio, optimize builds. Others like the feeling of exploration. Others want immersion/role-play.
It has nothing to do with "today games bad". Part of that is childhood and nostalgia. You won't get that back.
Figure out what you enjoy. If you like social games and making friends, then you need to lean towards that style of game. RuneScape 2007 is still very much alive today.