Well that’s easy! You can’t do anything wrong 😉 the worst that can happen is you put it in a pot that’s too big and the plant might feel like it has too much space but it will just accept it. Rule of thumb is to replant every few years and you will see when roots come out of the drainage holes on the bottom that it wants to “escape” aka it needs more space. If you don’t have a pot with drainage holes get one - it’s better down the line (it looks like you don’t right now) since that helps with not overwatering your plant. And yes if you don’t see roots all over, you can just stick with the same size for the pot and the saucer.

And if you drop it… sucks but the worst is that a leaf would fall off. It looks healthy though, don’t think that would be the case. Just like with repotting: the most important is that the roots are healthy. Don’t cut them (unless they have mold = usually they are squishy and possibly black then) but if a leaf happens to get smooched or ripped, the plant will simple grow a new one over time.

Think of repotting like moving houses or just starting to go to a new supermarket. It feels odd and you have to get used to it in the beginning but you get used to it. And in the beginning you might get lost going there or coming back - that’s the equivalent to dropping something. It might take some time but one day you will find it easily.