Clearly the majority of your protein is in the stalked gel. meaning that you used either a very high sample concentration ora low running voltage. Another possible cause is that the protein exists in a aggregated form, so these aggregates find it difficult to enter the runing gel.

Try to use 10% gel, Increse the running time or voltage, use a marker, and make sure the correct connection of the electrodes

Also, make sure you used the correct running buffer.