When I place a pressure plate on a block and there's Redstone under it, the Redstone won't light up as its supposed to, I hope ya'll read this and get to fix it and if ya'll do Thank you so much for fixing the bugs and problems that the game somehow has. 🙂
In the video, the heavy weighted pressure plate is correctly outputting a signal strength of 1 with 1 entity on it. You can read about using pressure plates here: https://minecraft.gamepedia.com/Pressure_Plate#Redstone_component