it is what I say and repeat and repeat but no one understands, and in coins with very volatile movements or low capitalization only 3x and considering a stop loss just in case

Based on my experience, leverage for beginners should not exceed 5x. During my learning process, I experimented with different levels of leverage, from maximum to minimum, and discovered something crucial:
When I was using leverage higher than 5x, any sudden market movement resulted in the liquidation of my positions with significant losses. In contrast, by staying at 5x or less, I was able to manage risks better and avoid frequent liquidations.