Nah. The foundation of the friendship matters more than the age gap / gender.
Most NT friendships are based on interests (as far as I can tell). Interests tend to have a gender / age-gap correlation. My best (female) friend hangs out with a group of 50's something married men - I forgot what over, but they bond over a specific interest. That has a loose correlation, e.g., I Love Lucy fans might tend to be older than HIMYM fans.
I think for you, and you are making steps towards this based on the posts you are making, you should worry more about orienting your friendships towards exploring your own interests.
Most NT friendships are based on interests (as far as I can tell). Interests tend to have a gender / age-gap correlation. My best (female) friend hangs out with a group of 50's something married men - I forgot what over, but they bond over a specific interest. That has a loose correlation, e.g., I Love Lucy fans might tend to be older than HIMYM fans.
I think for you, and you are making steps towards this based on the posts you are making, you should worry more about orienting your friendships towards exploring your own interests.