Here's a proper way for getting early versatile mount on mobile, first, get something like raptor (to actually find an equus)

Next you wanna do the hunter cave to get a balm, but I prefer Saving the balm you get from piranha hunting pursuit xd

At last, get some rockarrots(Trike/Stegois the best for it. You can try farming using a medium crop plot too, they're pretty common in loot drops) and start the pursuit and go searching for them

I find "the forest near the soo called volcano mountain and the whole area around green obelisk" the best places for finding equus

Wherever you find them, just soothe them with balm then feed carrots and you got yourself a very versatile mount

-an unknown guy