Paper 2D : How to make a character walk around a circle ?

Hello, I’ve been trying for a few hours to get my character to walk around a circle (like some kind of mini planet) but I can’t get it to work. I’ve looked on the internet for many different solutions but couldn’t find anything giving me a solution.
I did get some start with this solution :

I tried to add a force to my character in the direction of the circle but since gravity is still active the character is stuck at the bottom and can only swing. The add force method doesn’t seem viable because it restrains my character’s movement too much, or am I not setting it properly ?

Edit : here is a video showing the problem