You can insist on cameras on, but sometimes you will be thwarted by technology. (As I was in my first evening class of this term.)
Some fully paid up versions of videoconferencing software includes options to measure engagement, e.g. are students eyes on the screen, do they have other applications prominent, is there mouse/keyboard activity? Can't tell you what's currently on offer, as I have only used free versions lately, or been an attendee, rather than a host.
It will help to be proficient in knowing how the software works - how to share slides and other materials, how to add annotations (e.g. when going through exercise answers,) how to use and assign breakout rooms, how to make things interactive- you can use speaking, but there are also options like whiteboards or quizzes, etc. A lot like a classroom, but there are differences, and good online teachers can adapt to it. Mind you, not all classroom teachers use technology as well as others, so there's an element of teaching style, too.
A friend who had taught in person for years offered a group of us online classes for free, so she got the practice of doing it online before going back to face-to-face, and we could give feedback n what worked and what didn't. So that might be worth trying if it's a feasible option,just to get used to it, if you're so familiar with working online. Smaller groups or 1-2-1 definitely easier.
I've only been involved with adults, though, who have generally paid and chosen to be there, so tend to be more motivated. Teaching a load of children is different.