Once you’ve confirmed you’ve got UART codes, you’re into decoding stage (which again I don’t have much experience with).
You probably want to decide soon if you’re going down a Home Assistant+ ESPHome route, and get ready for that.
You can also start decoding messages with the ESPHome UART debugger.
And then I’d also start a thread on the ESPHome Discord and cross your fingers that @ssieb might help you out. Refer to Desky and this thread etc.
That’s where the real guru’s are active;) There will be a lot of experience over there with decoding and also the next step after that, which could be building a custom component.
I can help you a bit over there over too.