Lost my phone-no lock on it

[Arghlostmyphone]

My head's all over the place-can anyone please help?

I lost my phone while walking in a really small enclosed area last night, within a 5 minute window.
I retraced my steps immediately. No joy-there was one woman in the same area who probably left walking the way I came in.
Its a leafy, wooded area. Lots of undergrowth.

I left the area and then realised I'd lost it and went back
It has no lock. Photos of me naked(!) Notes containing personal information.

I'm such an idiot! I've changed passwords for here, and for all apps I can think of. What may i have forgotten? I've posted on local fb groups, had the sim cancelled-what else could I do? :(

Thank you to the poster who suggested the findmyphone thing for samsung-I've tried it and it says 'cannot locate' though :(

What happened when you called it last night? Did it ring, or not?

Do the screenshot steps work?

Or follow this link as you can remotely erase your data

www.samsung.com/us/support/answer/ANS00080182/

If you have location turned on you could try:

www.google.com/android/find?u=0

@DianaT1969

What happened when you called it last night? Did it ring, or not?

No :( but seconds before I lost it, it had randomly switched itself off. So I don't know if it had done that again.