Any recommended books/video/etc. on the french defense

I started playing the french a while back and didnt like it at the time, but im changing my repertoire to the french because it seems fun now. Im studying the french defense but i dont have a sound middle game plan. Is there any books/videos/etc. that could help me. Thanks

search 'French' here...

Good Chess Openings Books For Beginners and Beyond...

https://www.chess.com/blog/RussBell/good-chess-openings-books-for-beginners-and-beyond

you might also check out the resources here for content on the French Defense....

Chess Openings Resources for Beginners and Beyond...

https://www.chess.com/blog/RussBell/openings-resources-for-beginners-and-beyond

I assume that you are looking for the concepts and basic "how to's" rather than the latest wrinkles in theory. For that purpose, Neil McDonald's "Mastering the French" is a good intro based on the pawn structures that arise in the French Defense. Unfortunately, it is out of print, so I'm sure that used copies are expensive. Other books with good sections on how to play French pawn structures are "Pawn Structure Chess" by Andrew Soltis and "Chess Structures: A Grandmaster Guide" by Mauricio Flores Rios. Both are readily available and very helpful.

Yes.  Mastering the French by Neil McDonald is a good book,  And yes it is out of print and copies are now very expensive...

https://www.amazon.com/Mastering-French-Batsford-Library-American/dp/1879479524/ref=sr_1_3?dchild=1&keywords=mastering+the+french+chess&qid=1631371289&s=books&sr=1-3

However Neil McDonald has written another book, introduction to the French Defense, targeted to the improving chess amateur which I highly recommend, as he does a superb job of explaining the themes, plans, strategies, why's and wherefore's of the moves, etc.  Curiously, the title of the book, which deals exclusively with the French Defense, does not contain the word 'French'...

How to Play Against 1 e4 by Neil McDonald

https://www.amazon.com/How-Play-Against-1-e4/dp/1857445864/ref=tmm_pap_swatch_0?_encoding=UTF8&qid=1631371484&sr=1-3

There's lots of lines, variations to choose from! 

By the way.  I have 28 books on the French, including Mastering the French by Neil McDonald and Simon Williams' book that you mentioned.  But for someone essentially starting out in the French, Neil McDonald's later book is about as good as it gets (IMO).

There's an abundance of French Defense resources out there. First one that got me into it was GM Simon Williams' excellent video series here on chess.com. He also has a book on it. Then I started expanding into other books and videos.