CO2 works for me, once it’s blasted the tyre out to the edge of the rim (take the valve core out when using the gas) it’s a doddle.
Let it down (don’t have much choice without a valve core!) stick the Stan’s or whatever Jiz in and pump up with whatever pump takes your fancy.
Then you get months of hassle free riding.

My bike was in a LBS and they lent me a demo bike that I merilly headed out on, I’d just turned to head for home when I got a puncture (10 miles from home), oh poop, no spare tube or pump because I was so used to the hassle free tubless riding! 🙄

Got it sorted!

Used a Bonty ACX tyre on Tubeless Ready rim, and hey presto it worked!

Tyre choice seems to be the answer