Self-worth Struggles?

I think I may have low self-esteem. I don’t feel like I do, but being realistic I fit all of the qualifications from the few websites I googled. I’m not sure why I’m like that because I feel like I do have pretty high confidence.
I worry that I will be passed over a lot.

In Austin while I was studying to get my CELTA I met three friends from Tasmania. We decided we wanted to go to a football game, but we didn’t want to pay so as we were walking in we asked people who were walking out if we could have their tickets. We only ended up with three, one less than we needed but it was so incredidble. Instead of holding onto her ticket one of the girls made sure everyone else had one, including me, the straggler. She wasn’t even a little bit worried about getting in. In her defense, she was a perfect blonde specimen, skinny with thick hair and bright blue eyes with a buubbly personality so I’m sure her confidence had something to do with being the European standard of beauty. Regardless, it didn’t change the fact that I was amazed when they got three tickets and instead of leaving me out, she gave me a ticket and went ahead to the gate without one.
Of course the person working waved her through. She was so confident lol. I would have waved her through, too.

That’s how I want to be. I want to be so self-assured that I’m sure that things will work out for me so much that I’m willing to risk my ticket because I know I can get it anyways.

But at the same time, I generally get what I want so it’s hard to feel like I have low self-confidence.
The time in New Orleans when we went to some rapper’s party in NOLA. We definitely had to pay to get in and we were all just chilling. I started talking to someone and I got separated from my friends. After I was done with that convo I went to go look for them. They were behind a chained section and I totally just walked in and found a seat. They were shocked that I entered VIP without an invitation, but I just shrugged. What does a maroon barrier mean to me?

So I guess my confidence wanes back and forth, but in general I would like to be more consistent.
Generally I like the things that I do and I feel like i’m a very gifted person, but at the same time I do think I need to battle my low feelings of self-worth if I actually want to have the consistency I long for.