In terms of ideas, I would recommend exploring solutions you take for granted in you current country, that don't exist (or could be improved) in the country you're moving to. That's usually a good place to start.
In March I lost my 1.1m seed round for a startup I was starting in the event sector. Whilst carefully watching what was changing as a result of COVID-19 I founded https://covidcomply.org - first version was built in 6 days, 44 days of development later I can't keep up with customer requests now.
Take away; Chase daily revenue (small), daily product improvements (small), daily customer feedback (as much as possible).
That's my 2 cents - hope it helps ;)
[0] https://www.amazon.co.uk/How-Make-Million-Before-Lunch-ebook...