TIFU by leaving my laptop unattended at a coffee shop and now my work life is in tatters.

I (32M), a teacher, decided to grab a coffee after a long day. I brought my work laptop with me because I needed to quickly check emails and make sure the built-in DVD player was actually working. We're starting The Great Gatsby next week, and you know how technology can be. So, I set up at a table, plugged in my headphones, and hit play on the movie to test it out. Then like an absolute idiot, I didn't even think to close my laptop. I just got up and went to the restroom. When I came back, I noticed a commotion near my table. The coffee shop staff looked flustered. As I approached my laptop, one of them quickly apologized, explaining that they had just had to ask someone to leave due to some inappropriate behavior with my computer. I looked down at my screen, and my email inbox was open. This person had apparently decided to have a little fun by mass-deleting my emails. The staff were apologetic but couldn't provide any details about the individual. The damage was done. I spent the rest of the afternoon panicked. I have absolutely no idea how I'm going to recover from this. I feel like the biggest idiot in the world. I feel so incredibly irresponsible. I don't know if I can ever fix this. TL;DR: Left my work laptop unattended at a coffee shop to use the restroom. Some random person mass-deleted my work emails while I was gone. Feeling like a complete failure because of my own stupidity.