Also you shouldn't be disappointed or give up in bitcoin or crypto investment if trading hasn't work for you just try to HODL bitcoin or at least do more proper research on the altcoin you choose to HODL while if you are still have desire to trade, reduce the amount you use in trading, try to avoid risk when necessary and continue to learn to improve your skills and knowledge about trading.
I agree more with saying bitcoin than crypto in general because when you say something in general there are far more misunderstandings. Basically, investing in Bitcoin will not cause anyone to suffer losses as long as they know how to invest correctly. Trading is much more difficult to do when one does not understand how and that is why it is better to invest rather than trade. But it comes back to each individual and if both can be done simultaneously it would be much better because it could open two directions to achieve profits.
Bitcoin has the strength to survive in the long term and the Hold concept is usually the best choice for people who hold it because if we are able to be patient until Bitcoin reaches the next ATH then the investment value we have from Bitcoin assets will increase.