How to Change Fitness Goals on Apple Watch Series 1

Hello All!

I recently received a hand-me-down Apple Watch for Christmas, and I I wanted to be able to tweak my Move, Exercise, and Stand Goals on the Fitness app, but I don't seem to be able to. I've tried the way Apple support recommends currently for Series 3 watches (swiping up on Activity) but the option does not pop up for me. I've also tried pressing and holding on both the Activity wheel and the 'Move' section of the stats layout. Any help would be great, but ultimately I just want to fiddle with my device. It is currently running watchOS 6.3, if that helps.