[bruceb]

assuming you have at least a small amount of money saved, say $7k-$10k. Fly in on tourist visa. That gives you 90 days, and it seems you can just leave the country and come back for 2 years every 90 days (though this will be annoying). https://www.onlinevisa.com/visa-south-korea/british/

When you get there assess the situation, and can go talk to companies that you apply to. Then if you get a job, can leave to get the new visa and come back.

Of course these was easier pre-covid as can take cheap flight to Japan or other country after 90 days, but probably still doable.