Low sexual satisfaction due to not lasting as a male

Sex is unsatisfying for me (M28). I suffer from premature ejaculation and thus usually don’t last longer than 2 minutes during PIV. Despite my gf not minding it, it makes sex for me very unsatisfying. Cumming that quickly gives weak orgasms and simply lacks the build up that makes sex great. I know this because the times I lasted longer were so much better in every aspect. Foreplay is 100% focussed on her, partly because she is a bit passive but also because I just can’t endure much stimulation. It makes the dynamics of the bedroom very one-sided. If PIV wasn’t so unsatisfying I wouldn’t mind because I thoroughly enjoy getting her off but since PIV is so underwhelming, it feels like sex is just for her sometimes. This coupled with a high libido makes sex a constant frustration for me.

I really struggle with thinking of ideas to improve the situation. Some things that interest me are off limits for my gf due to a variety of reasons (hurting jaw for bjs and she doesn’t like prostate play). Other possible additions to spice up sex are also not really an option because she is very vanilla and doesn’t like power dynamics or anything like that. Second rounds have been my go to but my refractory period is longer than I’d like. Besides, my gf usually isn’t up for the second round and for me it is just not that great physically and mentally. I often get flaccid or don’t cum.

Any suggestions?