Hi, I wanted to know where you can watch AOT for free… When I wanted to start it on Netflix it wasn't there anymore
Legal nowhere!
And no, illegal sites may NOT be mentioned here.
You can google the corresponding pages on your own.
You can watch the 3 season for free from January 29th (per 7 maxx)
Chargeable: anime on demand (seasons 1 to 3)
Wakanim (season 4)
The 3 season can soon be watched for free and legally (per 7 maxx)
Since you have to pay the GEZ, strictly speaking it is not entirely correct that it is free.