Terra-cotta pot let the moisture seep out if there’s too much. Think of it as a smarter soil, water comes back in if the soil demands it in the right areas. Plastic with no drainage lets water sit and break down the soil and weaken roots, could cause drowning. With drainage the plastic pot acts as a funnel and pours out where the soil may not hydrate enough and let the plant feed off it on its own terms. Treat everything like it’s alive and your way of thinking for the plant changes……. This is how I learned to take care of my partners plants while they’re away and I still live another day lmao.