Lost my sexual confidence after my breakup

I was with my boyfriend for 2 years, and he was my first everything. However I've never orgasmed, not with myself or with a partner.

My boyfriend and I recently broke up, and my friends convinced me to get on tinder, after sleeping with a two other guys I'm starting to feel self conscious about sex, like why would anyone want to sleep with me, and it made me insecure because I never had to explain to my ex about my inability to finish and my lack of sex drive/boring in bed.

I don't know how to get my confidence back, and it makes me wonder if I'm even handling my break up correctly. I don't feel like a slut for sleeping with different guys so recently after my breakup, but I'm also concerned because what if this isn't the right thing to do, maybe I should be more focused on myself.

Anyone else feel this way, or have an tips to feel confident.