Hi

If I'm making a typography using various authors' font that is labelled as "free for personal use" and I share it on Instagram for public but not making income/profit from it (just for fun) will it be fine?

Kindly give me advices, please
Thankyou

The easiest and safest way would be to check with the authors of all the fonts. If you share it on Instagram its not your personal use anymore. So just ask the authors!