It is never too late to invest in something that should be around for the next 100+ years. Bitcoin is the only thing that can challenge the fiat currencies and it should increase in value the more people who use it the more it will be worth. I think you should try dollar cost averaging out. Search online [1] for a explanation and it should give you a tutorial on how to do it. If you do dca instead of investing a big amount you should be safer when Bitcoin goes down which it does often. It is easy to think that Bitcoin will fail when the price goes down but if you have faith and wait until it starts recovering again you should see good profits.

1: https://www.fidelity.com/insights/investing-ideas/dollar-cost-averaging-plan