Any advice on how to find my phone?

I definitely need to try this, I lose my phone at home all the time!

The situation is not enviable. I suggest you contact the police or get lost and found, although before you do that you can try the phone search services, they can also help, here is one at https://heylocate.mobi/how-to-locate-a-lost-cell-phone-that-is-turned-off/. The best way to do this is, of course, to keep a record of where you put your phone. You are welcome!