Hi,
that sounds like a lovely plan and a great adventure.
Sorry, I don't have experience in this kind of work, but talked to many physios that came to us during a work & travel period.
just in general.
For each of these countries you will need to have your degree validated, complete the required registration processes (if any) and -if you leave Europe- have a visa that permits you to work as a physiotherapist.
And then you need to find an employer that gives you work (gets you tax-registered, insured, orientated, etc.) for a short amount of time.
While this should certainly be possible, I can imagine it to be a lot of work and money spent.
Or were you planning to stay everywhere for e.g. 6 months?
Have you thought about volunteering?
It might be easier to sign up with a volunteer agency and work e.g. as a caregiver/ assistant.
Cheers,
Andrea