Make my master own me

Hello Sam,

This is Ryan 23 years old.
I met a straight alpha during covid randomly on grindr and met him and he wanted me to give him hand job as he talks dirty and kicked me our with cum face. It was my first time being a slave. Since then i have been doing the same every week till yesterday.
Only once he let me suck his cock for an hour with condoms on.
I have begged many times to control me and use me. I also offered to do his house chores and be his slave but he dont respond for it or just says i need more training before i become that slave.
My question to you is: how to have him use me and become his slave?
3 years of handjob and getting kicked out with cum face doesn't seem to please him enough to use me?
Your thoughts on this?
Please and thanks 😊