Logged into Apple mail, and all mail have disappeared

My email wasn't really working so I uninstalled and reinstalled it. After installing and opening the app, I logged into my icloud email but forgot my apple ID password and had to change that also. Once I changed the password I attempted to log in again, but then would be stuck on the waiting screen for ages. There would be a little loading sign and then reverts back to "next" continuously. I'm not too sure why but I end up logged in eventually somehow, but find that all my email isn't there - it's like I created a new account by accident. But my apple ID was correct, password correct etc. I have used my different emails to log in other than my icloud, I have even changed my password again using the official update password thing on settings and same thing occurs. My emails are still there on other devices, and when I log into it online but it's just not on my phone.

For clarification, I have plentiful icloud storage, no updates needed, and mail is switched on in icloud settings. I have deleted and reinstalled the mail app, reset my phone multiple times to no avail and am on the verge of pulling my hair out. Please help me, thank you