Suppose you are going to start crypto trading and you don't know about technical analysis then how you will manage your trading? Where you will set entry and exit point and the most important thing is that which coin you will choose to trade. Suppose you choosed a scam coin to trade and they failed to pump and you will be in lose automatically. There are a lot of cryptos in the market and all are not potential or a strong project. Also if you buy a good coin but don't have risk management then you will surely can't survive in this volatile market.
So before starting Crypto Trading technical analysis is a must to know. You can learn about it by reading articles from Google or from YouTube.
You have made a great point that technical analysis is very important for trading. Apart from this the choice of coin is also very important so that you can further improve your trading. Coin selection also requires a lot of care and knowledge. Circulation supply, market cap and market rank are always important in choosing a coin, because there are many coins in the market where people have invested but their value is not increasing.
Another very good point you have made is that it is always important to choose an entry point and an exit point. People who do not adopt a strategy for entry point and exit point in the market can never profit from the market.
Of course, Google and YouTube are the best platforms to get information,but it can be even better if you try to learn from an experienced trader in this matter.