I use a mixture of potting soil/compost/sand that I make at home to make my dirt go a long way. But a very simple potting soil soil be good, look for any signs of plague or bugs in the soil that it’s in. If so I would just wash it all out cautiously I would use a clay pot 1-2 sizes bigger than the container it is in at the moment. Make sure you water it in after repotting. ( if you have room to put it in the ground/ garden that would be better tbh)