I have found if you find a girl at a hotel you like, let them know you are interested but tell them you will change hotels if they want to meet in the future.
I did this once with a girl working at a hotel bar in Pattaya.
We exchanged information, I changed hotels, then she sent me a line message to meet her for drinks and to play pool.
She ended up at my place afterwards and we had sex and she spent the night.
She never asked me for any money. I left 1000 baht in her purse but it was never brought up before or after.
She had an older boyfriend from USA so we never saw each other again because he was coming into town that next day.
I have not been back since due to covid so unsure if I will get a repeat.