Basically, if I used like flare blitz, would I do damage to the opponent first or would I get hurt first.
Recoil damage is dealt after damage to the opponent. If you KO your opponent with a recoil move and KO yourself via recoil, the opponent will be knocked out first.
Source: experience
Hope this helps! :)
Moves that have recoil are damage-dealing moves that cause the user to take damage after being used.
So it does damage before the recoil takes place.
Source: Bulbapedia and a lot of experience
Hope I helped!
The only moves where self-damage occurs prior to the opponent's damage are Mind Blown, Steel Beam, Selfdestruct, Explosion, Misty Explosion, and Final Gambit.
Your opponent is hurt first Source: experience
You do damage first. Source: Experience.