there are two possibilities. 1. starter 2. relay

Realy is not expensive and you can replace it by yourself.  Just pull it out and replace it.  If you can find out the same model of your car and check the replay.  There are many relays in each car.  The best way to find out which one is bad that change it one by one.

If you turn the key and you can hear a little sound that not starter that means your repays are working.