Bugs love infrared light. Spiders love bugs. When the IR LEDs are in a ring around the lens it's pretty obvious what happens. If the IR LED is a single, high powered, LED and mounted off to the side or below the lens, even if only by an inch or two, the area of interest for the bugs and spider is moved away from the lens. Keep in mind I am talking about a turret camera, not a dome camera. Look up the Dahua 5442 series and you'll see what the differences are, and if you buy one, you'll see what the differences are between a good camera and a Reolink, especially at night.
There are lots of threads here talking about spider problems. Some people use Vaseline, some use Vicks Vapo Rub, some use silicon spray, some use various bug sprays. All have recurring problems. I have eight turrets and four bullets. The only ones that I have spider problems with are the cheap bullets with LEDs around the lens. In fact I have a turret mounted in a tree and have never had to clean a spider web from it in over two years.
If the cameras weren't Reolink, you could also shut off the IR in the camera and install an
IR illuminator separated from the camera. Problem is that low end cameras like Reolink, SV3C and similar, don't provide any way to control IR or a whole list of other key settings.