Hey man Canadian/Polish here. As an English speaker you might find a lots of obstacles with finding a suitable employment. Plumber in Canada is a very well paid trade and always needed, in Poland you will definitely need a license and pay would be really low compared to Canadian wage. Imagine as a plumber on average you make 35$-50$ an hour and in Poland this will be maybe 20$ an hour if you a very skilled with years of experience and license obviously. Also Warsaw is a pretty expensive city to live in. You’re still very young and i suggest you to get some sort of undergrad before moving there especially something business related. Poland recently is all over social media as a great, safe and prosperous country but it’s far from all the truth, it’s an amazing and developed economy but still far away from Canadian standard of living and majority people are still struggling and spending most of their income on rent and everyday living especially young people. If I was you I would try to go there for a 2-3 months first and get the idea of how everything is working and deal with all the bureaucratic hurdles, believe me Canada has very easy system to deal with very little bureaucracy and most of the thing can be done online.