It's very easy to think that it's impossible to be plant-based while traveling within Thailand, but it's actually pretty easy! There are options everywhere if you know where to look and what to say.
If there's a surplus of anything in Thailand, it's definitely FOOD! Turn around any corner and you'll see carts selling various yummy-smelling snacks and treats. However, for picky eaters and those with dietary restrictions, it's not as simple as "I see it, I eat it." This is when knowing certain phrases is useful - you can get knowledge of the ingredients used and inquire if they can make something suitable for you.
All of these lessons, I believe, have led me to become a better Muay Thai practioner. And they've bled into other areas of my life. Lockdown sucked, yes. But I can say, without a doubt, that I didn't get nothing out of it.