Hi i connect to a free public wifi that you have to log in to each time

Is there any way of making my PC in to a repeater and sharing the internet connection throw Lan as well

eason throw lan and wifi is not all devices have the option of using wifi

I know how to do it in windows by bridging connections but can not work out how to do it with Ubuntu LTS 18.03 (desktop)

Btw this is my 1st ever posting here