If you are finding it very difficult to clip out of the pedals, then you need to loosen the pedal tension. For that, you would need a 3mm Hex key and turn the screw towards the minus sign in a counterclockwise direction and a quarter of a turn till it loosens a bit. It is then recommended to hop onto the bike with your shoes on to check if you can clip in and clip out easily. Only loosen more if you still find it difficult to clip out. It’s not recommended to loosen the pedal tension too much at once.