How can i remove url parameters in GSC?

Hello everyone,
I have questions about a url. The urls that i am having problem include * and c symbols.
1- what is the meaning of that asterix * in a url and how can i remove it?
2- And i found out c is a url parameter. And i decided to delete them because they were causing indexing problems. I clicked legacy tools (search console), url parameters and i added an additional url-prefix property to be able to use the legacy tools. It said "go to property" at the end. Later i reseted two...

How can i remove url parameters in GSC?

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