I think males are more oriented towards gaming so the percentage of male audience in your channel is high. However I think there could be more females than the number actually shows because few females could be accessing your content from their partners / fathers device.
Quite possible. This has happened with us too.
I have a Youtube channel that has the female oriented content. The audience was expected to be majorly females. But our analytics data shows that 50% are males. Then we realised that the audience was females consuming our content from their partners or siblings device. Got to know this because the comments we received were by male names and when we responded they said she is a female and typing from her husband / fathers mobile.
So these numbers can not be 100% accurate.