Basically, at this point I'm afraid that if I open the game, I won't be able to do anything else that day.

That's basically how I am with the game. 😅

It's an enjoyable game!! And it sounds like you're having fun with it. 🙂 The dungeons do get a bit harder later on, I found at around level 40+. I like how you can do them solo or with a group though!! More MMO's need to allow for solo play as well as group play and I'm happy Lost Ark has that feature.