The important lesson you should derive from your experience is that as a retail investor, you cannot trade like the casino-- just like you cannot play cards or gamble like the casino at the casino. In order to "trade" like the casino, you need to be a casino, and in markets that means you need to be a market maker in a security(s), where your business becomes all about flow and risk management.
If you want to take levered bets, then you need to build a portfolio of ideas that has the delta/gamma parameters you want (e.g. high convexity per trade). But using options to express a view is not the same as options trading, which is not selling cash-secured puts or whatever strategy is touted.
Trading is about capturing alpha in a product, asset class, or security. If you're trading options, then the source of errors will generally come from implied volatility (more markov less mean-reverting), and the way to capture that alpha is to have your own view of IV, and then hedge out the rest. You want to isolate the thing you think will make you money, cancel out as much/all of all of the other noises, and then lever up based upon conviction.
If you learn how to do this and can replicate this on multiple ideas within your portfolio, then you are actually learning the "trading" skill. Practice doesn't make perfect -- perfect practice makes perfect.