Vulkan drivers are not working like they should causing Steam to not function as expected

I’m trying to play the games SimplePlanes, SimpleRockets, and Bloons TD 6, but I am on linux. I am using the Steam Play compatibility tool Proton, but Steam is stuck "launching" the game forever. Other games that have native support (ex. Team Fortress 2) have worked.

I am using a dual GPU setup with Intel and Nvidia, and the drivers are up to date. Proton versions 5 and below cause the game to crash with a Unity error, but the issue occurs with 5.13 and above, so no versions work. The operating system is Manjaro Linux.

I found out my Vulkan drivers are not working like they should. I am able to use the Intel one, but not the Nvidia one. So I need help on enabling that device would be appreciated. When I try to run vulkaninfo with Nvidia, I get

ERROR at /build/vulkan-tools/src/Vulkan-Tools-1.2.159/vulkaninfo/vulkaninfo.h:248:vkGetPhysicalDeviceSurfaceFormats2KHR failed with ERROR_INITIALIZATION_FAILED

I know I’m running the Nvidia drivers, because I’m using the command VK_ICD_FILENAMES=/usr/share/vulkan/icd.d/nvidia_icd.json DISPLAY=:0 vulkaninfo which sets the driver to be used as an environment variable.