PCIe bandwidth halved by connecting a second NVME SSD?

evening together, Here is the following question for the experts among you: I'd like to install another M2 SSD (currently only one is installed). However, I've heard that this would "steal" lanes (bandwidth) from the graphics card, resulting in poor performance since it has to share the connection with the NVME drive. Unfortunately, I couldn't…

Which hard drive should I buy to replace my current one?

I currently have two hard drives installed. The primary drive, C:, with the operating system and Windows, is a Kingston SA200S37120G, and the secondary drive, D:, is a Seagate ST1000DM010-2EP102. Now I'm having the problem that the main drive, with its 111 usable GB, is almost full (9.27 GB remaining), and I've already moved everything…