First attempt to start an MVP about notes

Hi, this is my first post here, and this is also my first MVP, cost 3 days.

I don't think it has any commercial value, its significance is that I have successfully made it. The tech stack is nextjs + firebase, hosted in vercel.
You can experience it on this link if you intrested in it:

https://atomicnotes.vercel.app

If you have any ideas and suggestions, please communicate with me. Thank you very much !!

(As a mvp, I'm sure it has only the most basic features. There are many problems)