Low self eestem..

My ex was very mean to me sexually. He yelled at me for not being able to talk during sex(I’m 20 and he’s 25). I honestly didn’t know how too and i didn’t feel comfortable and he’d yell at me and talk down to me because he felt i “wasn’t appeasing” his sex drive.. I’ll be honest i didn’t know what to do he was a lot more advanced than me sexually so i always felt that I wasn’t good enough. He wanted me to do things i just couldn’t and would say things about the girls he’s dated in the past and how great they were sexually. Now that we’ve broken up and i like someone else I’m always so worried that I’m not making them happy or I’m boring in bed and i know it’s bc of my ex and him being so mean to me... i can’t expect myself to be a porn star plus I’m new in exploring what i like but i don’t want to have this weird anxiety. I don’t want to feel I’m boring in bed, or not good enough :( idk how to shake the feeling