If you find meat repellant that's ok.
I used the word 'try' deliberately because sometimes we miss out on a range of food for the want of trying.
Give seafood a try as it's abundant and inexpensive in Thailand.
Humans have always been omnivorous not exclusively vegetarian.
Our guts have evolved to deal with a great variety of foodstuff so have faith in that.
It works for most of us most of the time.
Best of luck.