Low self-esteem

Hey guys, I just found out my self esteem is really lowđŸ„ș and it’s really sad because no one who knows me would ever think this because of the way I am but it is😭 I can’t help myself from thinking that my bf is cheating on me, and I always find an excuse for every award I win like “I didn’t have good enough competition” or that’s what I’m supposed to do, and I guess that because literally everyone around me has such high expectations for me and it’s so overbearing😭 whenever I try to talk to my mother about her being too much she get really mad and we start to argue and eventually I cry😕 I really don’t know what to do about it, I don’t wanna see any sort of psychological or anything because I don’t feel this is a big deal but how do I feel proud of myself? How do I trust my bf ?(who does nothing wrong) how do I love myself? How do I appreciate my flaws? How do I know that I’m worth a lot? Someone please help