I guess what you are saying is that just on its own csm is not a very good indicator, needs to be clubbed with others. I agree.
You need to make sure its on a lower time frame as higher time frame you can see differences in currencies but then get stopped out with a retracement
I feel the currency strength meter is a little weak as an indicator to tell anything accurately about the currency. It can act as a good first-step filtration process and that’s it.
I have seen many traders who take up manual calculations and end up confusing themselves. I don’t think that you should waste your time on such things when there are free calculators available online. You just have to fill in your details and your results will come up in a fraction of seconds.
Confluence of something that every trade a must understand