I don't think the technical analysis will help you much with crypto. Most of the time, the news are the ones going to dictate where the market is going. If you rely your trading on technical analysis, you'd encounter the term paralysis by analysis soon and will result you to just hold your token instead which can be the better thing to to.
News really are not the ones who dictate where the market is going, it is the public sentiment over a news. Therefore, one only needs to pick a coin to invest into, determine if it is good and bad(based on concept, team, whitepaper, activeness of community), set a target price to sell into(preferably a realistic one), and hold until it reach the selling point. This works most of the time but in order to minimize loss on coins that one doesn't trust, set a cut loss sell point but it should be low, not near the buying price.
I agree with you that the sentiment determines how the market reacts to the news.
I have seen very good news in bad sentiment and the coin did not move at all.
But when sentiment is high, even "we have a new office, look!" can produce massive gains.
It is quite absurd IMHO.
Regarding your realistic selling point, I think TA could do it's fair share in helping you determine it
