Until you have a hospital emergency in Lagos with no ambulance to take you to the hospital , and when a private vehicle volunteers, then the first hospital rejects you, the second demands a police report, and the third demands lots of money before they can touch you, that is when you will know that the UK’s massive downgrade package is better than your Lagos upgrade.
Leaving a good managerial job in Lagos to go do entry-level care work in the UK isn't "japa" it’s a massive downgrade packaged as progress.