How do i turn on my 144 hz display on my dell G5 15, i am sure it have 144hz display, tried all the traditional methods but in vain, helppp?

[Dawood Qamar]

Ok, so I tried going to settings > display > advanced display and selecting the screen, but still it's showing me the 60/48 Hz option, and the default drivers for my laptop are UHD 620. When I attach another display, the default driver or GPU for that is my RX 2060.I tried installing Nvidia drivers manually and automatically, updating all my drivers and stuff, etc., and doing a lot of things suggested on the internet, but all in vain.I have 2-3 questions: how exactly can I 100% know if my display on my laptop is 144 Hz? The seller told me it was 144 Hz, and it says that in the general sp

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