That is correct, Dell no longer releases driver packages for touchpads. Modern laptops receive their drivers in Windows Update. I don't have Windows 11 in front of me to check. In Touchpad settings, find a setting called TouchCheck or PalmCheck (or palm tracking or palm detect) and disable it. (It temporarily stops touchpad inputs while the user is typing - most users want that enabled, to prevent accidental touches being interpreted as user inputs). If you don't see such a setting, then in Touchpad settings, set Touchpad sensitivity to Most Sensitive, so that it should accept touchpad inputs even as there are simultaneous keyboard inputs.
I just bought a m15 R7 with 3070 Ti, everything good EXCEPT Touchpad has a little issue, if I hold a key on keyboard and try to double click with taps (not clicks) it doesn't work properly. I already tried what little options in Windows 11 Touchpad option. This made me realize compared to my previous Dells, there is no third party software for the Touchpad, like Synaptics. On my other Dell I was able to tweak this issue on such software. I have everything updated, Windows update, Alienware update, SupportAssist, Nvidia. Please give me a solution for this. Such a shame having this issue on a $54,000 pesos machine.
m15 R7, Touchpad software missing