One bitter truth most of us failed to realize is that trading and cryptocurrency may not be for everybody. When I heard about how a guy lost a huge amount of money on a simple trade taken of the war news and it went against him, that's when I realized that if it's a must for you to trade and you don't want to lose, doing these 3 things might actually help (this is my own opinion as a profitable trader).
The first thing is having to learn and relearn, and use that knowledge in trading big and solid coins like $BTC, $ETH, $SOL on spot trading- at least you don't lose there unless you sell.
The second thing is knowing where to be greedy and where not to, most especially when trading newly listed on-chain projects. Let me take all these new ones as examples: $NEXUS, $BaoBao, $BUNK, $CARV, and also $ACID. Along the line, I decided to pick one to trade on-chain; I won't just pick but rather check the score and do due diligence to see the one doing great in trade, and after seeing a 15% profit, I'm okay.

Lastly, learn how to keep your profits and never use them to
trade. Shalom!