Old DeathAdder mouse

Hi, I only have one mouse and it's the wired DeathAdder Ergonomic one. As I understand it's severely dated and no longer supported by any warranty, which is fine, because the mouse itself works perfectly fine. Only, I no longer have access to any of the settings for it I once had. I remember being able to turn off the annoying blinking lights, I remember being able to change the settings, the mouse speed and acceleration, DPI, everything, within the Razer software and now it won't show up anywhere even though the product is registered and recognised by my computer. I kinda rely on being able to change these settings, especially when I connect it with my laptop - because the trackpad is rendered completely useless if I lower the cursor speed enough to use the Razer mouse, and if I want a working trackpad, I have to increase the speed so that the Razer mouse is completely useless. I'd like to lower the mouse speed specifically for the Razer mouse only, and I'd love to be able to turn off all the annoying blinky lights like I once could. Is there no way to get a hold of a dated driver software or something, I can access the settings that were once available to me? I understand that this is an old mouse but surely if it worked just fine before, forcing people to buy new products by disabling their settings when the actual mouse is perfectly fine, is the same kinda anti-consumer stuff Apple does with their phones.