My recommendation is LDPlayer 64 bit - https://www.ldplayer.net/?n=92392444#utm\_source=aff&utm\_medium=aff&utm\_campaign=aff92392444
Give it a try for a few days. I dont crash after the first few days
Amino is an app where you can have a community based on one topic such as Exos Heroes, Epic Seven, and Knights Chronicle. Literally anything you can think of probably has a community there. Anyways In the amino Exos you can post your art or save it in a shared folder where it can never be deleted or make wiki posts based on anything Exos! If you want to join here is the code!
I heard that you need to use separate Google login accounts if you want to reroll because it takes up to 7 days to delete your old account. I personally wouldn't bother with it if you find rerolling tedious in general. One thing you can try doing instead is exchanging the two extra Sabrinas for another Fated unit at the door to creation (click "Combine/Convert" at the bottom and then click on "Hero Re-Recruit II").
If you are willing to reroll multiple times to get a much better start then it would be worth it to aim for FC Rera (or the new FC Baraka who is speculated to replace her in 2 days), but that might takes hours or days worth of rerolling which might just kill your enthusiasm/enjoyment of the game.
Bluestacks isn't a good emulator. You should use LdPlayer, it's way faster than Bluestacks. My Exos Heroes has never crashed using Ldplayer than it did on Bluestacks. https://www.ldplayer.net/