mistakenly deleted the directory with photos

Hello, I deleted old Capture One backups, keeping the last few. These were large files, so windows deleted them without the recycle bin. As it turned out, in the first copy folder there was a directory folder where all imported photos were saved. The result is that now all photos are Offline. With the help of various data recovery tools, I have tried to recover the deleted files, unfortunately to no avail. I lost hundreds of photos, the effect of many months of work. I lost photos on projects for my clients that I was working on recently. Can You help me? greetings David Ballaschk (I don't speak English, I use a translator)