And is there any 144hz monitor which can I use with HDMI (as my laptop only has HDMI 2.0) and get 144hz?No, it only supports HDMI 1.4. The fastest it could support would be 120hz at 1920x1080. Assuming the monitor accepts that input refresh rate over HDMI.
That monitor only supports HDMI 1.4 as well. It requires DisplayPort for 144hz. You need a laptop with a DisplayPort or Thunderbolt 3. As Thunderbolt 3 also does native DisplayPort output.
And when I get into the XG2402 manual it says that with HDMI 2.0 it can support 1920x1080 @144hzAnd is there any 144hz monitor which can I use with HDMI (as my laptop only has HDMI 2.0) and get 144hz?