Once a day?!!! That is on the light side ; )
FFS. Our bodies are made to be happy! Personally I think there should be an orgasm on waking, one on going to sleep, and one or two in the middle if time/work/etc. allows. It's so good for you and do NOT ever EVER feel guilty for loving to feel pleasure!
Victorians even had clinics for this ...
Come on. It's OK. Sometimes I've felt I'd like porn with men only because I don't like looking at women, I like looking at men. I'd prefer porn from the female POV, where you only see the man! Why the hell would I want to look at a woman with her legs open? I'd rather be trying to focus on something entirely different ... (crikey, it's 10:26 - might need to go and lie down soon ... this WFH is great : D) (joking, joking!)
No, once a day is not a sex addict.
Yes, it's good to have sex/feel pleasure.
My only note of advice would be:
I think you feel bad not because of the orgasms, but because it's looking at women on women porn that is getting you there.
It's very very possible to get addicted to porn and you probably would be better weaning yourself off it.
Some arousal feels bad because you don't like being turned on by that. It sounds like that's how you feel here. So just lie back, no porn, and fantasise about something you're happy about liking.
Just try it. Maybe you do indeed need to go cold turkey on the girl porn. Because you don't feel good about this.