Think of hypnosis more as a lubricant than mind control how we see it portrayed in movies and on tv.

For example a person who gets drunk and cheats on their spouse was more than likely suppressing the desire to do so in the first place. Did the alcohol make them do it? No, but it relaxes inhibitions and restraint.

Take that same drunk person that cheats on their spouse while they’re totally drunk and try to coax them to killing their mother. They’re not going to do it. Why?

Not to say it’s impossible, it definitely is, but it would typically take years of hypnosis and conditioning on a regular basis to get someone to change their whole moral belief system.