Hello friend greetings to you. Hope are having good time there.

You said the MACD, or moving average convergence-divergence, is an indicator that allows us to observe changes in the momentum of the price of the cryptocurrency. You are very true in that dear. We measuring the strength of the movement of these currencies.

Bollinger Bands you define are made up of three lines or price bands. These lines we then use to identify periods of high or low volatility, the trend changes in price and identify its strength or weakness. That's the beautiful explantation about Bollinger band.

Infact you have beautifully explained all the technical tools here. All the answers are very valid and to the point.

I wish you very best of luck here in the contest.