Hello - I am sorry that you've had those unpleasant experiences. I, too, have experienced similar feelings. Through legalization (in my state) and experimentation, I determined the root cause (certain types of weed and percentage of THC) of my paranoia/bad feelings. Now, I know what will make me feel good and how to avoid the negative outcomes of weed consumption.

FWIW, high CBD, low THC if I am smoking flower and for edibles I know my limit is a measly 5mg, and I usually start at 2.5mg.