Probably not much help on this board. You probably need to do some searches for ex-pat communities in Europe, where moving, work visas, taxes, and the like are discussed by those who have experienced it.
But to provide a very basic bit of advice, what you are thinking is much more difficult than just figuring out if any qualification transfers. The most basic issue is gaining the right to immigrate into a country and gaining the right to work. Unless you already have some right to citizenship in a European Country, getting a work visa to then seek work independently is nearly impossible.
Most US citizens that work and live in Europe are hired by European Companies prior to relocating, who then sponsor their work visa, and do so because they have very specialized skills that are needed.
Another group works for US based companies, who again take care of any paperwork, or even for the Defense Department, working in association with the US Military or State Department.
Showing up and seeking work, in hopes you can get a Visa will not work, you are not able to be hired without the proper authorizations, and if your skill is readily available in the workforce, an employer would not be able to sponsor a Work Visa.
I guess I would suggest looking to see if the Defense Department is hiring, something like rehabilitation specialists that may include massage, but to be honest, on many US bases, when they need skilled help like that, they hire from the local workforce.