Some trading rules for newbies that I have broken many times. Not definitive but from the top of my head might help some. Please don't see this as a lecture as I don't trade currently.
Have a hard stop and don't risk more than 1% of your bank on a trade. Start trading to learn not to make money. Play the long game and see your progression over a series of trades rather than the next trade.
Set realistic goals.
Take ownership of your trading, don't rely on others for trading entries/exits.
Never scale into or double down on a trade. Martingale is a just a way to lose money more quickly for novice traders. Advanced traders can use this technique successfully IMO.
Know yourself, if Fear and Greed take over you are doomed.
Keep asking yourself questions. What has the market done, what is it trying to do. If it does this I expect that. Hypothesize, you can test them out on past data. Very useful for future trading IMO.
The outcome of your next trade is 50/50, repeat to yourself until you understand. It's a binary outcome, you either win or lose (I call breaking even losing). It is impossible to know the outcome of your next trade. Don't pretend otherwise.