Run tubeless for a long time now (UST Rims and Tyres), i’ve had three issues: had one puncture a few years back in Wales, and one from sharp stuff in Canada last year.
One of the rubber O rings in the vales perished from age last year too, so maybe replace those.
Stans sealant has worked fine with my two punctures, just pumped up to about 60 psi and carried on riding, sealant has worked by the time the tyre is at about 20-30 psi…
To put the stuff in just pop the tyre off a bit of the rim, pour in sealant, refit and reinflate…
Still carry a tube just in case the rip is too big or the rim is damaged badly, but so far have never had to use it…