#SOS - Stuck on Flagged Mails ONLY.

So, I don't know what I did but I am now stuck on flagged emails only. I cannot view other mails, drafts, sent etc. I have tried to correct this severally but I think I am officially stuck. The choice for something else is not available and it used to be before I selected flagged emails. Can anyone help?

PS - I saw something like this from another sub but the reply given did not help.

Thank you.