Maybe. I've been home with my wife and kids since early on during the pandemic. They get on my nerves sometimes, sure, but nothing that makes me think my marriage, or marriage in general, is terrible. I still love my wife and kids, and I enjoy spending time with each of them individually and as a group. I'm nowhere near perfect, but we try to get along, try to do better, and my wife and I were together for nearly 5 years before we got married. So, we had a pretty good idea what we were getting into.
Marrying for love is a relatively new concept. If you were forced to marry some ugly ass fat French dude so your dad could get some political power, you'd probably hate marriage too. "Marriage bad" as a meme is older than the internet.
Something like 43% of all marriages in the US end in divorce. Take into account that many people who want to, can't due to economic or societal reasons so the number of unhappy marriages is well over half.