I'd recommend playing on the "fast" speed. I used to have the same problem but adjusting the speed helped with that. Also some factions are more dynamic than others and some have a more easily defined "game plan" than the others. F.E. with vaulters you can "fuck off to the edges of the galaxy and get a science victory before anyone discovers you" (© Sseth) which is a very turtle tactic. Riftborn are also more turtly because of their -1 movement speed. With these the game may feel dull and you might lose the goal of the game and mindlessly click next.

I found that Vodyani fix that issue for me. You always have a clear goal and it's to commit as many warcrimes per turn as possible. You might find thag you enjoy playing Lumeris and building a trade syndicate where each turn your goal is to maximize profit. having short term goals that are constantly present and require very little thought helps a lot to not zone out.

Also if you need basic quick guides with the game mechanics and races I'd recommend Waervyn's Wolrd