Hey Guys I have a one website with 3 completely different niches and want to separate them, so should i create just Subdomain for each one and redirect subfolder to subdomain, OR redirect subfolder to completely new website? Which is better to get high search results? as now, i have a good SERP only for 1 niche from 3 and want to change this situation
Google count all your backlinks, even this ones that point to one of your subdomains, to your whole domain. Therefore if you want to receive fast results in SEO different subdomains would be the best approach, but Google could also penalize you because you have irrelevant links pointing to your domain. Furthermore you wouldn't have the chance to experiment with SEO, if you have only one domain. Make different domains and try different SEO strategies for each one. See what works best and copy your strategy.