I thought all foxes walked on 2 feet until I was 23 years old
Why would you think that foxes walk on two feet instead of four?
My favorite cartoon was about a fox that walked on two feet.
Some people find out silly mistakes later on in life. So long as you accept the fact it's okay to make those mistakes.
No, it doesn't matter. I don't know what to do anymore
There is no need to get so distressed about this. It is good that you are still learning new things as you venture through life. I think that that is how you keep life interesting.