Usually, most doses for recreational use are 5 to 10mg of THC which is low; however, as THC can cause anxiety and paranoia in some people it would be best to check with your Doctor.

I've tried weed with and without antidepressants. Definitely prefer without. I use weed to replace antidepressants anyways.
Some people can, some can't. And second ask your doctor.

It’s my understanding they should not be mixed. Ask your doctor, could be it depends on the dosage.

I use abilify and sertraline antidepressants and would love to use M. gummies.

It depends on your medications. I suggest talking to your doctor. I'm on an antidepressant and use cannabis, and my doc doesn't have any concerns.