Sounds like you are having slave cylinder issues. The slave cylinder is a hydraulic component that pushes the clutch lever when you step on the pedal. If the slave develops a leak, the pedal will go to the floor. This...
A dirty throttle body (https://www.yourmechanic.com/services/throttle-body-replacement) can cause your accelerator to stick. If enough dirt builds up the throttle blade inside can bind up on the dirt. I would ask for help from a mechanic to clean your throttle body and...