Also, I'm too fat and ugly to be a tomboy so don't come with that suggestion since tomboys can only really be thin and cute
I think this is a really good place to start to challenge your thinking.
I realize you mentioned different places on the Internet as confirmation that “tomboys” have to look a certain way, but there, too, is an important place to challenge your thinking.
First of all, these are external sources of validation that you have cited. Always thinking about how others will perceive you can usually lead to feelings of insecurity and low self-esteem. Every single person on this earth sees things a little bit differently, so there really will be more varied opinions then there appear to be on tick tock and Google, even. Think hard about if you want the commonalities represented on tick tock to govern so much of your life.
I think the answer is to find ways to support internal validation. This is when you feel good about yourself, you feel proud about yourself, and you are confident enough in your own feelings of security that it doesn’t matter what the Internet says. Why give social media so much power over your individual life and the way that you experience the world?
We could start to dissect your thinking with the very word “tomboy.” This in itself is an old-fashioned term from a time when gender roles were more stringent, and any girl that tiptoed outside of a tight stereotype was considered to be more masculine. This, in itself, is old-fashioned thinking, and we have a come far enough to realize that there is a huge gamut between masculine and feminine. It is a spectrum, much like autism.
Find the things you love to do, and do them. Find the clothes you love to wear, and wear them. I think this is a chance for you to become who you really want to be rather than someone that you are imagining will be accepted and liked on tick tock.