Trailing slash and Google indexing

Hi, there.

I sat redirects for trailing slash for all urls without slash at the end.
Redirects works fine for users, when I request links like: mysite.com/shoes/man/white/low
Redirect training slash to the link:
mysite.com/shoes/man/white/low/
But, in Google Search console I see tons of links which Google marks like duplicates. All links are without slash at the end.
Why links without slash are available to access for google bot? How google bot see them?

I sat following Regex settings in the plugin:
Source URL
^/([^\.\?]+[^/])$
Target URL
/$1/

How to fix this issue?
Regards, Sergey.

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