Wrong pot D:

It's bad. It's not hellish bad but it could really hurt your plant starting in no drainage pots. Why not do some holes on the side or bottom? If it's a hard plastic pot gently with the tip of a sharp knife start doing a rotating motion applying slight pressure inwards - be patient or you'll break the pot. If the pot is a plastic cup just pick up a screw and rotate it in the side of the cup or below until you have a whole - again be patient or you'll break the cup and stress the plant. This is of most importance as it would help oxigen get in there.

just make some holes in the bottom. you know it's less about drainage and more about preventing contamination by harmful bacteria... it's a plastic cup, so it should be very easy to do 😉 no stress , hope this helps ! 🚀

Drill some small holes in the bottom or poke a few holes in the bottom. Ideally you don't want it storing water in the pot.