HELP!!! Unable to boot win after efi partition resizing

Hello everybody

My laptop Hp omen max 16 running win11 latest version, got a bios update & i wanted to do it but kept getting no enough space (means in efi partition), so searched online & came across a solution which is shrinking a small space from C drive(windows drive) around 600mb & using easesus partition manager extend the efi partition with this unallocated space, so i proceeded & did it & windows restarted & was going to do 3 tasks moving data is the 1st task after it i got an error (i think it was saying unable to mount volume or something like that idk exactly) then laptop rebooted & it cant boot to windows & it attempts to auto startup repair but it fails & sends me to advanced options, i opened cmd in win. recovery & in diskpart i noticed the windows partition vol. Fs is unknown
Any ideas how to recover this & reaccess windows as i have work & imp. files or atleast boot windows externally & recover files from the ssd drive or create an iso image of the win

Help needed really, TIA