My wife and I tried Swinging.

I (30 Male) Wife (31 Female) tried swinging last year. As the experience wasn’t very much by only having a few times it happened. (twice) I have tried talking to my wife about it but she does not seem interested she looked and acted like enjoyment and pleasure was there. We do have young children in the home I understand the concern but I do feel like we are entitled to have fun. Her main concern was she didn’t want to sleep with multiple people and catch anything which I respect I told her that’s fine why don’t we see another couple or suggested we go with what she likes since she is not bisexual and just do threesomes with guys. I don’t know how or what to say after she shut it down to tell her it’s okay as long as we are open to each other. Any suggestions or comments?