How to change the URL of category

I will like to change the URL of the various categories of my site to this schema:

two47news.com/categoryname E.g. two47news.com/tips.

Currently, the URLs show as two47news.com/category/categoryname E.g. two47news.com/category/tips

This does not affect the individual stories under each category, which show this schema: two47news.com/category/postname E.g.
https://two47news.com/tips/atm-services-atm-transactions-cash-machine-withdrawal/

I am totally baffled as to while the category appears as it does, which I suspect is also behind Breadcrumb errors that my Google Search Console highlights but that will another thread.

I will also like to solve this problem without the use of a plugin. If you can point me on where to go to solve the problem and what to do, that will be awesome.

Please, every useful advice will be appreciated. Also, please note that I am not really a technical person and rely on the community and Google to sort issues I encounter on the site.

Thank you in advance.

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