Got a boss katana 50 month ago. It has 2 channel and In the back has a footswitch adapter 1/4. On the website it says I can use a GA FC foot switch but it has 4 channels and reviews say it only works with boss katana 100 which does had 4 channels. My question is would a boss fs6 A/B foot switch work or any other pedals similar?

I simply want to go from distortion to clean. I'm sure you'll say why not buy a pedal simple as that but the boss has 15 effects built in and I'm not a rich person to buy pedals and want to use these effects at full potential. Help a newbie out, thankyou!