Question

Hello Rabbi Michi,
In principle I go to a gym.
My gym is at Country Sport; 90 percent of the people there are men or older people, but on rare occasions it happens that there are a few girls there too (older women and maybe some younger ones here and there).
Is it forbidden for me to go to a mixed gym even though it does not arouse my desire in any way (also according to the Ritva at the end of Kiddushin, and I know my inclinations in this regard), and also when they are working out it does not interest me at all, I do not look in their direction, and they do not “attract me” in the literal sense of the word? Is this okay, or is there some concern simply because it is “mixed”?