How do I prevent water from the toilet from spilling on my butt when I poop?

Line a piece of paper in the toilet water while you're on the WC so the water doesn't spill.

Here's a trick to tell you how to tear a piece of toilet paper before using it and throw it into the toilet bowl so that it won't splash in the water.

Landlord, tell you a little way! Press the flush button as soon as you poop! I believe your hand should be able to press it! That way, there will be no water splashing, and even if there is water splashing, I don't feel so disgusting...

You can try pulling it out of the toilet.

Next time, remember to put a tissue on the water surface of the toilet first, so that the water will not splash on the buttocks