Looking for genuine feedback on how people feel about derogatory gay expressions.

Hello,I am not here to be disrespectful in anyway, but am genuinely curious to get feedback on how gay people feel when they hear someone say things such as "Don't be gay", "What a fag".I understand everyone is different and has different opinions about these phrases. I personally do not say such things, but am interested to know if people get offended by them.Thank you!