Before I answer I must first specify;
It depends on stress, life comfort, and many other things.
There was a point in my life where life was fine, and zero stress. Every few days or so I would masturbate for hoourrs. I even orgasmed 8 times in one looonng night.
Anyway I averaged masturbating about 3-5 times a day, every other day, and also twice a day. It would circulate between 2 times a day up to 5.
Since 2019, my life has been uncomfortable, stressful, with limited privacy. While my sex drive had slowly continued to increase, I fap significantly less.
I average once a day now, twice if I'm lucky to feel decent.
When I move out it will be lovely again.
TLDR; 3-5 times a day average in a comfortable living environment.