Caro Kann

you can use 'explorer' to see winning percentages of every move, according to the databases.. it is not available in app i guess, you should use browser version.

Those winning percentages are not the last word on the matter, though. If a refutation is found, people stop playing the line, so the historic win/loss percentage is "frozen in" at that point, even though the line has been refuted.
Here's an example from the Petroff:
Consider this line:
This line has been played many times, by players from club strength up to world champions (Petrosian, for example). The historic win-loss percentages are:
White wins: 35.7%
Draws: 21.4%
Black Wins: 42.9%
Advantage Black... yes?
Or maybe not:

https://chessmood.com/course/caro-kann-defence attack against caro-kann! p.s If you wanted something good with white