It is NORMAL for most of us to miss when available and then regretting later on. I am the one had missed bitcoins to grab for less than $30 (not $30k) by the early times of bitcoins; due to lack of awareness about the future of bitcoin, I remained as a fool and then regretting right now almost every day.
I have been watching many people were sharing stories like me and some people were praying for big collapse of bitcoin market so that they will enter at cheaper price levels yet in big volume. They are somehow right but definitely not up to their dreamy levels. Yeah, bitcoin is known for getting us second chances always still we can get only 70% or 80% cheaper and not 200% cheaper.
You should not regret missing out bitcoin that way, almost everyone around the world did miss bitcoin at that period. As a comparison humanity is getting closer to 8 billion population (probably already did considering unaccounted for people) and then only like 100 to 1000 people ended up buying under 30 and hold until now, probably less people who still have control of those wallets as well. So do not be sad about missing out, be happy that you rode along afterwards eventually.
Remember there are still a ton of people all around the world that never checked bitcoin even once, most people in the world never owned a single satoshi so far, and you ended up buying it before any of those people, and there are probably a lot of people who bought after you bought as well, so you are still earlier than 90%+ of the whole worlds population, that is a good place to be.