getting a tighter physique with sarms

I’m Skeptical about using sarm but willing to give them a shot
my stats are 5 9’’
190 pounds
17% body fat
simply looking for a tighter physique I’m happy with the amount of muscle of on my frame
my plan is:
GW 30mgs per day
LGD 15mgs per day
Yk11 75mgs per day
anything else you would change?