Chastity in vanilla life discussion

Hi there, I’ve been single for a while after a two-year relationship. It took me several months to get my bearings before I jumped back into the online dating scene. The current global circumstances haven’t made it any easier, of course! Since my last partnership was heavily focused on women and involved quite a bit of abstinence, I feel like I might be smaller than most guys and definitely struggle with certain activities. So how does that play out in regular dating when things get physical? Should I explain why I can’t “perform” or just come up with an excuse? What’s the best way for people to date?