I think you being retired is a positive! This means you have more time to research and a little extra research really goes a long way in this industry. Remember bitcoin is only a decade old and most of the current users were only introduced in the last couple of years so there a not many cryptocurrency specific experts in this industry.
You are right that the old people have more free time but I think it is not the right time to run after money. One should make all those arrangements before 60 itself so that he can enjoy his life after retirement without any financial issues.
And regarding there not being specific experts, I think that if someone really finds some secret formula to make success with bitcoin investments every time, he is not going to share it in open. If everyone starts using the same technique, it will make it ineffective.