All you need for this trick is some dish soap. Exactly, you don't even need a plunger. Just pour around half a cup of liquid dish soap into the toilet bowl. Leave it for around 25 to 30 minutes. When time is over, fill a bucket with warm water. Pour the warm water into the toilet carefully so it doesn't overflow.
Mixing dish soap and hot water will make the clog slippery, helping it move through the pipes. If this way doesn't work at first, you can try doing it again. While this approach may not solve every blockage, it is worth attempting before hiring a costly plumber. To watch how this technique works, watch the video below.