Maam try pressing F3 and F4 at the same time but if it doesn't work then try F4 + F5 and you will change modes immediately and it is very helpful as spectator mode will be very easy to show mob Battles and you can quickly press it again to change back to normal
Your channel is so related to your title I mean no intro no outro no talking and just straight forward to your title that saves so much time and is is so good