Struggling to ejaculate

Me and my partner have struggled with sex in the past and are trying all sorts of things. I’m finding it hard to actually cum easily. I worry it’s because I’m not super fit and can’t build a good rhythm that lasts long enough. Anybody else get this or have handy tips?

Yes, I understand. I would say stay here and work through all the content, and trust in the process, you’ll get there.