What kind of videos do you want to make? What kind of content do you wish to create? I, for example, like gaming and I also like teaching. I have 2 channels (of which I haven't uploaded in a while but will be again soon) of which my content revolves around these things I enjoy.
In the end, you have to take 2 things into account when figuring out what content you wish to make. You need to do what you like, otherwise creating content will become work instead of enjoyment and you don't want that. Second, you need to also follow trends. it's nice to make what you want but if there is no audience for it it will be mostly for you. So in essence, do what create what you enjoy but also make sure there's an audience that will enjoy it as well.