All of your questions, up to this point, has to do with making your hair grow back long or faster. No, cutting split ends and massaging your scalp will not help.
How did your hair become so damaged with split ends? The damage is what's keeping you at a shorter length. If you stop damaging your hair and stop the breakage then you can grow longer hair. This will be harder if you have a relaxer because relaxers have strong chemicals that weaken your hair and even if you take good care of it the chemicals will eventually take a toll and break off your hair.
If you want your hair to grow back then start practicing healthy hair care. That's the only way. You have to be patient and stop doing things that break off and damage your hair. It doesn't matter how fast your hair grows if all it's doing is breaking off; hair that's breaking isn't going to grow longer. Good luck.
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