One additional point to add... and I mean no offense by it.
From your self-assessment of your playing abilities, it seems you are somewhat of beginner. From your original post, it seems you're waiting to be contacted by a band.
That's a bit like a somewhat homely wallflower waiting to be asked to dance.
I think the main problem with BandMix is that people don't want to pay for access; they expect the other party to do so. (I think it would be in BandMix's interest to offer free membership, and to employ an ad revenue model; but, that's a separate discussion.)
If a search of bands in your area shows some that you think you might fit with, pay the money (like $12) to buy a month's worth of access on BandMix to reach out to all them, rather than waiting standing on the sidelines. I live in a major metro area, and have been contacted by others on BandMix; but, in both my current and prior bands, I reached out to them when they were looking.
I also think it would be helpful to have videos of you playing, even if it's just playing along with a cover song. Many are apprehensive to post a video, because it can be a double-edged sword; but you're going to have audition at some point. If you are not good enough for a band, and they decline from seeing your video, it actually saves you both time and effort.
Good luck in your pursuit.