See this thread:
Tires for goatheads?

Two different approaches you might consider.

Really thick tires. Hopefully thicker than the length of your thorns.

Also suggested in that thread were Panaracer “Flataway” tire liners. A bit expensive, but they're supposed to be the best.

Finally, if you really don't like flats, consider the Tannus Solid tires. I think Specialized may be selling them now too, under their own name.

Tanis solid tire

NO FLATS.

A bit different of a ride. I have the narrow tires on one bike, but they have wider ones available. A bit of a pain to install, but you do it once, and they should be good for a good long time.