Most tempered glass protectors on amazon aren't bad. Most reviewers don't understand that the glass protector is made to be a bit smaller than the screen because even though the S7 is not the S7 edge, there is still a small curve on the edge of the screen. If the glass fit to the screen, it wouldn't protect well and would peel a lot.

I have the S7 and use this screen protector which works pretty well: https://www.amazon.com/dp/B01ALAR50Q/ref=cm_sw_r_cp_apa_SWqoyb0JG935R

Good luck with your new S7!!