Ganondorf vs Richter

Literally all of Richter's kit is enough to outrange Ganondorf. Wait until he cycles to throw an axe, then hope to god that running in for a punish will work out for you.

you lost on the css

It's easy to know when Richter is gonna spam. Try to choose a platform stage then you can wait an opening. His openings are with his axe. He throws it very slow, that's your chance to grab him

Close the distance with down special, then side b, then down smash.

Play as safe as you can and try to find the frames for punish him after a special.