Iphone 11 not booting up and in recovery mode

Hi Community/Friends

I have purchased an Iphone 11 with 128 Gigs storage in October 2019 and this month, its storage got full with mainly photos, videos and Imovie content. So, i tried to free up some space (like transferred 1000 photos/videos out of 8000 photos/videos to PC). Now, i tried to delete these 1000 photos from IPhones but unluckily they were automatically coming back. Then i tried to delete / offload the apps but those were also not getting deleted/ offloaded. So, in summary iPhone stopped processing delete operation. Next step which i did is restarting the iPhone thinking that will resolve this issue but it’s even worse now that iphone is not booting up and was in a loop with Apple logo on it. I have spoken with Apple customer care and they suggested me to update the IOS through ITunes but that failed in between (assuming due to full storage) and now it’s asking me to restore but I cannot do that as i have my 7000 photos /videos in storage which are priceless and I cannot afford to loose them as mostly are from my Dubai trip with family.

( I haven’t took any backup on icloud due to limited storage) i tried on Google photos but very limited photos were uploaded.

Can some one please help me with process to retrieve the photos without restoring my iPhone as that will wipe my data?