Original post here: https://www.reddit.com/r/tomatoes/s/5MUTaGYugN
Bought 160 liters of soil, and have now tried replanting the strongest looking of the plants. Unfortunately I couldn't separate the roots on some of them, so after they establish I'll cut off the weakest in the shared pots.
The graveyard (second pic) will however forever haunt me…
Thank you for all of your great advice in my original post, what a great community!
by Mattzx13