Should i return to this game?

Carmilla is a very beautiful woman.

Up to you. Gacha will always be hell.
If NA makes the same thing as JP for this year, then it could be a good opportunity to start again (New Start Dash, Musashi Banner, gifts and campaigns, etc.)

Stay away for your own health.

Yes, but stay F2P (aside from GSSR, maybe).

Also, don't spent all in 1 single banner, even if those are free SQ. Rinshtar let my reserves defenseless, at the cost of one Fionn and one Beowulf...

Come back but stay F2P, if its a consolation to you, I spent like 1500 SQ on Scathach and did not get; granted I did get spooked by Karna but that made me set a resolution to spend less if not none at all in the coming year. Bottomline is since I hv already spent on the game, just enjoy it with whoever I have.

I am not sure if u all on my friendlist, as I hv a friend who had not logged on for days and his mssg was "spent 1200 sq with no 5*"....