MySQL design and best design practices

I am designing my first database for a mobile application, which is also planned to be developed into a web application. The photo shows the part responsible for user authentication and information about him and his current session, etc. I would like to hear from someone with experience what they think about this project, what it is worth changing and why, what practices to follow to make the database effective and safe, I want to understand if I am thinking in the right direction. Thank you in advance for any comments. I would be grateful for your understanding. I don't know if it matters, but the potential number of users is about 30.000, in the best case about 200.000.