In Spain people with foreign money can have a good standard of live. The level of english is one of the worst of Europe, nobody older than you will know any word of English and young people will be able to speak some. You will not be able to pay anything directly with bitcóines, only there is la calle bitcoin in Madrid but there are some cajeros bitcoin (arround 7000) https://www.territoriobitcoin.com/mapa-de-cajeros-automaticos-de-bitcoin-en-espana/ . Considerate Catalonia
I'm also from Spain.
My advice: Run away of Spain as fast as you can. The same for Europe.
It's a tax hell, full of migrants. Catalonia is even worse, full of corrupt politicians (as the rest of Spain), a independentist government (inestability) marxist/socialist filling their beautiful country with islamic guettos.
I'll consider, Switzerland, Canada or New Zealand. Australia it's also a good place, but I don't like the climate.
Stay away of tropic regions of the planet if you want to be safe. Get a map and see the countries.