The challenge with finding a traveling partner is finding someone with a similar budget who is congenial and has the same interest in travel destination and aspirational hotels. I think it's a very big challenge to identify someone of similar taste without really knowing them first.

However, a female friend has ended up with a nice group of traveling companions with no initial intent to do so. She started going to Canyon Ranch every year after her husband died far too young. There are several women who go the same week every year. They became congenial and now travel other places as well. In September, they rented a villa in Italy and had a great time together.

I have friends who enjoy high end cruising. They have a number of friends they have met onboard with whom they now enjoy planning the next cruise.

Perhaps you are male. I have no idea what the equivalent is for men of going to a spa for a week. Perhaps you could identify experience focused luxury travel - ski, bicycle, hike, dive - and thru doing that, find someone of like interest with whom you plan future travel.