Europe has a lot of countries and cultures, might make sense to visit first, see if there’s anywhere in particular you like?

English is the primary language in Ireland, and I think as a developer you’d qualify for a “critical skills” visa. Can read more here https://www.citizensinformation.ie/en/moving-country/working...

I imagine most countries have similarly helpful “moving to x” websites.

Amsterdam has way better infrastructure, more bike and pedestrian friendly (by a long, long way) and you can get by with just English to start.

But first maybe visit some places!