Protein powder for ibs , lactose intolerant, and what not. 🙏

Please recommend me a protein powder. I tried many like ON, my protein, avtaar, muscle blaze, and many plant based too nothing worked 10/10. NOW i need something which is super smooth for my very sensitive stomach. PRICE AND TATSE is least concern.

(And suggest me the most expensive protein powder too, i wanna give it a try once) This time i am thinking of buying DYMATIZW isopure or ON ISOPURE.