As promised here is the update!
As I said I was away for a month and this is what I found on Friday when I returned!
Since I came back I removed irrigation, I put a rubber mat ordered on temu and I still left the heating mats below between 18-20 degrees as you had advised me in the comments!
Out of 25 plants 7 have grown a lot, 3 have recently sprouted, 1 has lost their leaves and is remaking them and of 14 plants the seed has rotted.
However, I am very happy with the result. I hope around March 20th to be able to plant them directly outside after getting used to them a little outside!
Thanks to everyone for the advice!
by GroundbreakingSoft56