hello.. i bought this bonsai 2 days ago ... can i repot it from the plastic pot or leave it this way ?

The white pot is no better than the plastic one. Why do you think you must re pot it? It looks to be growing well. I think it might be Chinese Elm, so find a spot in the garden where it will get plenty of sun and keep it watered allowing it to almost dry between watering and give it a few months to settle.

As long as the roots still got space to grow there is no need to repot but if it comes out draining holes its time

I thought the plastic pot was not good for the plant.. if it's doing ok i will repot it in the spring in a adequate ceramic pot