How do i add a thumbnail to a yt video (my brother asked this)

It would most likely be easier if he looked it up . Or watched a  tutorial.

once you recorded your content you can add a few seconds of it where you can “stop” it to creat a thumbnail or simply creat one on pics art ect (app of your choice)

Explanation: add a few extra seconds of what you want your thumbnail to be and or edit it at the beginning for .01 seconds

there are men and women, some choose to be both or change their gender. often times those people go by "other". those who change their gender are known as "transgender"

theres nothing above