> What are the options you would consider?
Renting in different places until I found somewhere that I wanted to go back to year after year.
If you find a location that you prefer over vacationing somewhere new (or at least, if you find a routine that you enjoy), then consider buying in that location. The boating equivalent of your question might be “I think I like water, although I’ve never been on a boat. Which boat should I buy for $100k?”
As far as countries, decide whether you want to be on a lake or the ocean. Lakes have major advantages: no salt damage, far wider geographic selection, often easier to use the water (gradual slope into water, less impact from wind, tides, currents), and less erosion/property maintenance. In North America, “ocean” often means Mexico, though $500k would buy a small beachfront condo in a lot of the US.
So, go on Airbnb or VRBO and rent some lakefront or oceanfront houses for a week or a month. After a few trips, see what you like - or if you enjoy new scenery each trip. Each location doesn’t matter as much as seeing a wide variety so you learn from each experience. Enjoy :-)