Just continue with the trials, Mina is the last one you need, so go find her. Little tip for her, avoid using physical attackers, most her mons have Intimidate and make the battles a pain!
What about mimiyus z crystal i went in the old mega mart but i can't figure out how to find the mimicku that gives you the z crystal
The only story things that can happen after RR is getting Lunala at the bridge if you haven't already and going to the prof's place for a scene where you are also given the Lucky Egg afterwards. Finally, while not really story, there's the Battle Tree event where you meet Blue/Red, but those are pretty much it I think... There hardly is any more post-game compared to S/M. I literally one shotted everything of team RR except for some legends that took two hits
It took me 35 mins for the entire episode including cutscenes, so it really wasn't worth it! Although, Giovanni got some justice after all these years and was finally made a bit more like the badass he is in the manga, which was nice to see! Now if only you could rebattle him and the other team leaders...
It's when you are at Poni Plains and you try to go to the area before the cave Guzzlord was in S/M, you get the usual battle with those two small fries and they give you the ring with Alakazite.
You find Exeggcute or Exeggcutor and use an Adrenaline Orb until it calls for one with the ability you want
Just use something with a move like Skill Swap or Entrainment so you can see what ability it has.
Forgot to answer that
Just keep going and you will know when you see a clover one, it really stands out! Most often, they are around the 2500ly mark...