Article Ranked on 1st page of Google

One of my article ranked on Google’s 1st page
But it has URL: https://example.com/tag/keyword
And Title is “Keyword Archives”
Why? How can I edit the title?

That is based on Yoast Settings located here
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You may edit Title from here
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If i disable “Show tags in search results”, My article won’t show in search results?

Yes, the tag page which URL has like this (https://example.com/tag/keyword) will disappear.

then my traffic will decrease right?

Yes if you received on that page.

okay, i will edit the title by going to tags.