How to start freelancing and best freelancing platforms

I am Faisal, I'm a freelancer I started freelancing in 2013 I have good knowledge of freelancing.
How to start freelancing. First, you should select a niche
1) Skillset
2) Select YOu niche
3) Start From any freelancing platform like Upwork and Fiverr
if you need my help you can get me here.