Accidentally deleted boot partition for Debian 10

So I needed to re-install windows 10, and when I deleted the small partitions the older windows installation left, I took with me a partition that debian needs, basically, the only thing left of debian 10 is the big partition with everything except what you need to boot (I deleted them because I thought they were windows partitions, I didn't expect windows to be able to determine how much space was in use on a linux partition).

I still have the installation image file on a bootable flashdrive for installing debian (unfortunately it's a year old), but I would prefer to not install it from scratch, first off it's an SSD, and secondly I have limited data where I live and it's kind of expensive to download everything from scratch, specially wine and the things it needs, which were over 2 GiB (not to mention other applications like retroarch). So, if I can just use it to recreate what I need, that would be great.

Neither the partition with the debian installation nor the one on the flash drive are the latest versions of the kernel (I don't remember which version they were specifically).

My specs are:

Ryzen 5 2600
Aorus B450M
32 GiB RAM Ballistix
kingston SSD
WD HDD