Trading may be considered as gambling as well but at least you can reduce the risk by having an idea of a possible outcome so that you can act accordingly later on if the trade doesn't go where you wanted it to go. There are so many people who do this by following the signals of others and just depend on when they would received a signal to buy or to sell without even have an idea why they should buy that coin. Later on, they would just regret that they follow blindly the advise.
Technical analysis can be useful, but only if the market remains fairly calm. Calm market means there is less of impulse actions, fear, greed, etc. People then somewhat accept the range as long as it doesn't get broken, and within that range it keeps bouncing up and down for a while. These repetitive movements are quite easily to exploit in your advantage. Till that extent, it's not, and shouldn't be considered gambling. As soon the panic, fomo, greed, etc start kicking in, then make sure you stay away from the market, especially if you aren't comfortable trading in such circumstances. People who do so anyway, and overestimate their understanding of this market, are mostly those who lose in the end. No one can beat this market at that point.