So be gregarious! Be happy and friendly. Your audience will respond better to your jokes. If they feel that you are hostile, they will be defensive.
Yes, there are hostile comics. There are insult comics. But humor like that is a specialty, and is better to be left to the professionals.
Never forget: Jokes are about laughing and happiness. Be happy and friendly. You want your audience to laugh and be happy. They’ll understand, and they’ll like your joke more.