I think one of the things that most people assume ought to be easy is actually one of the most difficult things to get right, which I think is why many people have a go, get it wrong, and then think 'I can't cook! I can't even boil an egg!'
Boiling an egg takes lots of trial and error to make one that's not too hard, not too soft, that's cooked perfectly (for you).
There are so many different options, and me and an ex-bf probably tried them all.
Start with an egg in cold water.
Boil some water, then pop an egg in when it's starting to bubble, time for X'x".
Boil some water, pop an egg in, then turn the temperature lower and simmer for longer.
Add some vinegar to the boiling water.
Don't add vinegar.
Etc
Etc
Etc
And then you have to experiment with the timings.
Although, tbh, iirc, I think we worked out that Delia's recipe for boiling an egg was the best.
But make no mistake, it's tricky.