there is a simple way to catch an abra in pokemon rjion adventures it goes by these steps 
1. stock up on poke balls
2. before you even think of attempting to catch abra catch diglett with arena trap the way you can tell if a diglett has arena trap is if you run away from it it will not allow you to run away
3.find abra and have diglett at the front of your party(this way abra can't use that god awful of a move teleport because it can't escape thank you diglett your in my top 10 favorites because of this and lets be real dugtrio is just laziness)
4.have fun and evolve it

if you have another way of getting abra please tell me and if you want to know where to obtain a diglett its the same place you find abra merson cave so if you really want an abra you might have to obtain a diglett first ok sorry if that bothers you but i don't know a better way other than this if your a newcomer plus all you have to do is deposit him so do you like this guide on how to obtain an abra without it using teleport and do you find catching a diglett worth it note you can also use this with trapinch but i don't think you can find him in merson cave but its up to you i'm just telling you tips oh yea and there is another ability that helps its called shadow tag but are you willing to catch a wobbafett just to obtain an abra sorry if i spelled wobbafett wrong

now the second topic i am going to make a little group who specialize in catching pokemon who can come up with there own methods of catching pokemon this is my method first i use thunder wave/sleep powder if i don't have thunder wave and send in a pokemon that can learn both sand attack and double team 1st paralyze the opponent sleep powder if it is a ground type then spam sand attack this won't work on a pokemon with keen eye but that is like a 1 in a million chance of happening then spam double team this is probably the most cheapest strategy to catching pokemon there is but it is really effective it helps catch legends the only exception to this is groudon who you might want to put to sleep because he will be the most difficult to capture and plus i am not sure if groudon is even in this game so that would be useful if he is in it

post your capture methods of pokemon and does this help in catching yourself an abra without thinking to use your master ball on it which most people wouldn't and i would lmao if someone did