unity – Character sinks into ground when switching animations


I originally posted this question on the unity forums, but no one answered my question.
Here it is:

Hello, I have been game developing since May and today I finally figured out how animations work in unity!
But as with everything new in developing, I have problems. Let me just be straight with you. I have absolutely no idea what just happened.
I have a gif you what happens. Why does the character sink like that? Here is my gif and animation image Capt.gif upload_2020-10-12_22-7-37.png

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I don’t have any scripts or parameters for testing purposes. I just let it switch automatically. Here are my options for the transition:

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