Does the Instagram name change help to attract a new niche audience?

I used to make fitness posts but now I'm changing to finance posts. Is it worth me changing my name to something with ‘keywords’ that relate to finance, if this will get me to a new audience? I read Boostbysocial stating that niche consistency is very important in getting organic traffic. Does anyone know of a complete rebrand where by they used how to change my name on instagram and experienced success?