This is a discussion that traders should really pay attention to, often newcomers with great optimism and enthusiasm come without good knowledge so they rush into analysis and end up regretting it.
When I first got into crypto, I also got the feedback “sell when it's green and buy when it's red”, and when I tried it on Tradingview, it worked.

Regarding your experience in the world of trading, it is very unfortunate, but I am sure that this point is also the starting point for you to be successful because you are getting more experienced and trying to progress.
The world of crypto is very tempting, but don't be too greedy 1:2, because this world can change direction in a few seconds...
Analysis and knowledge and emotions are required to be stable, and with good trading knowledge I am sure that trading will be successful and losses can be minimized...
Experience is a good teacher, always success for you and good luck friends.... 👍👍👍