I said " thankyou" differently in case it looked like cultural appropriation or I was taking the piss...
I always say thanks to folks and make the 🙏 pray hsnd gesture. Same way as is common in many nations. I like doing it and it's very natural to me now. I'm just a regular old white dude BTW.
Anyway we went to a Thai restaurant this weekend, and I felt I better not do thst , in case the waitress thought I was taking the piss.