it's not only you. there's bunch of people still confusing on how a rebase token or elastic supply coin works. i once requested on rise telegram channel if they can provide a simple video or animation that explain rise protocol and can be understand by average people like me. and yes they are working on that video and will be able to watch soon.
maybe this article from binance can help you understand on how rebase mechanism works https://academy.binance.com/en/articles/elastic-supply-tokens-explained