Hey- I wouldn't be so hard on yourself!  I would venture to say that most that get into this space, and start out thinking they're going to make good money through trading.  I spent a few years trading and got crushed the first year or two.  Then, by year 3, I realized that "time in the market is more important than timing the market".  And once you realize that bitcoin will replace ALL fiat money- then you can just add to your position every chance you get.  Just keep adding every pay period, or DCA in, or once a year (if that's all you can do).

It's not about trading, or selling at the top & then putting all your money back in, during a bear market.  It's learning that bitcoin is the best place to store your money, and that it's safe there.  Just think of your bitcoin wallet as your retirement account and safehaven.  Add to it when you can.

Best of luck!  This is a GREAT learning lesson.  Congratulations- most people never learn this valuable one.