I can also confirm, after having a job with an international organization where I moved to a new country every year or two for more than a decade, that this also becomes routine. The novelty associated with exploring loses its luster and it grows exhausting to have to make new friends, find new trusted services, and adapt to a new biome for yourself and your partner.
Additionally, if you just move to another country, you might like it more there for various reasons (I’ve lived in Thailand also, and it’s a pretty nice country), but eventually it just becomes the place you live and work and take care of your house and dogs. And there are drawbacks of living anywhere.
So I agree. I think OP is facing is an existential meaninglessness that will catch up to them no matter how far they run or how much of their life they burn down. Things like mindfulness, community, creative expression, humor, compassion, service, gratitude, hobbies, rituals, family, journaling, traditions and therapy might be able to help.
Now make one with an elephant in the middle to put next to this one. It will be equally trite.