"Remember me" checkbox and search functionality

I have an almost finished application, but since ive only been coding for about 1 month its very hard to figure some stuff out. Since i dont have anymore time, i need someone else whit the experience and knowlegde to complete the code. The application is using firebase as login auth. Prefer using firebase as backend. I need a working "remember me" checkbox on the login page (NOT an auto-sign in) I also need users to be able to search for content on the app.