Lenovo IdeaPad 5 Pro 14ITL6 - Display Unusable

Hello,

That would be relevant on MX Linux forum, not here. Manjaro does not provide the

because is EOL = End Of Life = not supported.

There is a BIOS Update for Windows 10 (64-bit) and Windows 11 (64-bit) - ideapad 5 Pro-14ITL6 - Lenovo Support US

Download the ISO from Manjaro Downloads install it, and then deal with issues one by one.
You might need to use i915.enable_psr=0 kernel boot parameter, test newer kernels, use a mouse till you manage to sort the touchpad …