I eventually did restore the boot entry by installing a windows 10 ISO and not the Microsoft re commended recovery file.
I also went ahead and updated to a Windows 11 iso and am running it with no Issues now on my surface pro 6
Thanks everyone !
Ps. I worked also with Microsoft on-line chat support and they eventually told me after 2h I had to send it in .... Eventually costing me a crazy $450. What were they thinking!!