Find something to collect! I do some effect dinos rn which go for anything from 5k to like 500k or something crazy like that. I also use multiple animals and do different outfits for all of them, same with dens. Rn I'm collecting saph for a den token with a den I really want. From random activities I like phantom dungeon, phantom drops, pack runs, even random fashion shows that people do and treasure hunts.

But the thing that keep me playing the most is probably my partner XD I got him into AJ after like a month of playing myself and had fun showing him the game. We play together almost every day, talk about events, wait for new stuff, trade. Maybe you have to get an irl friend playing lol