Wow, .25 CPMs? That is horrible. Gaming channels are stacked against the creator. Terrible demographic, low barrier of entry, horrible CPM, etc.
I briefly entertained a side gaming channel but now I know what I know, forget it. Unless you can be come a star like MrBeast or other huge gaming channels, mere mortals are destined to have a very low return for their efforts.
For monetization creators, it is helpful to know your demographics and general CPM before you even create the channel otherwise you fly blind.