How to imply that mother-in-law is not good in one sentence?

The sentences implying that the mother-in-law is not good are as follows:

1, it is better to be your own mother.

2, the relationship between mother-in-law and daughter-in-law, far fragrant and far smelly, what I hate is that I have a big face and no self-knowledge.

3. What kind of mother-in-law relationship is the safest? Keep a certain distance and always be polite.

Mother-in-law will always be angry with her daughter-in-law, and there will always be disputes between mother-in-law and daughter-in-law. When you finally get married after 30 years, then you can find the feeling of being a mother-in-law from your daughter-in-law.

It is often said that mother-in-law and daughter-in-law have been natural enemies since ancient times. I quite agree with this sentence, but it seems that this sentence has not been finished yet, that is, men are useless and mother-in-law is the natural enemy.

6. In marriage, there are too many trivial things in life. Harmony between mother-in-law and daughter-in-law is the key Daughter-in-law often says that her mother-in-law is her mother, and her mother-in-law often says that she is just like her daughter. I don't believe this sentence.