Are there genuinly happy couples?

I'm in a romantically confusing time in my life. I broke up with a man that I lived with and I'm raising a lot of questions in my head. I always thought that if you like someone and want to be with them and the feelings are mutual, you communicate and it will go well. But it didn't feel easy in my previous relationships. Now I meet men who are all the things that I wanted my ex to have but I am not attracted to them to the point I feel repulsed by them after a while. I read a lot on these subject, both formal and informal stuff. Some advice say "You deserve to be attracted physically and emotionally by the other person and you don't have to force yourself if there is no chemistry", the others say "Emotional bonds come later, or choose feelings over physical attraction", "you are supposed to communicate and it's not going to be easy, others say 'no, it's supposed to be easy because with the right person for you it should feel easy, otherwise it's not the right person'".

I open instagram and there are either women complaining men are exploitive and manipulative or men complaing women are shallow and mean. And then there are the "perfect couples" which seem so cringe and superficial, and I get the vibe their life is so much different than the social media and they might live for the validation rather than true happiness.

And then I talk to my friends or relatives and everyone complains that they are not really happy, but they are ignoring some stuff because "nobody is perfect" and we end up talking about how when we were little we never though we would even get the chance to ignore such stuff.

Then, another part gets bored. No red flags about their partner, just "it's not it". Another part claims that after 7 years with someone they want to start over because " the spark is gone".

Even old couples, seemingly happy couples, who are the ones that get applause when they say how long they have been together, when they speak behind the back of their significant other, they often talk with resentment. Men say that women are not calm and they joke they have hearing issues from all the screaming, how they are never satisfied and "nobody knows what women want". They continue to make the usual joke about being happy only when they are apart from their women. And women on the other hand advise you to be calm and dismissive about some things because "men are always going to be selfish and not appreciative of your efforts".

I know you are supposed to find what is right for you, but how can you when we are changing all the time and so much trash is spilled from social media and everyone wants to constantly strive for someone better? Does genuine appreciative understanding and respectful love really exist or is it a utopian fairytale that just pushes us to search for smth that doesn't even exist?

EDIT: Thank you very much for all the comments and sharing your stories, I'm reading as much as I can. But seems like the majority of comments is relating it with social media comparisons. I would like to emphasize that the mentioning of social media is not to say that I compare myself or anything, I use social media only for memes, have 0 posts, and while scrolling either memes or more serious posts come with "relationship advice" filled with words about cheating, manipulation, ...etc. Same as here in Reddit, there are many posts about unhealthy relationships. I just used it as an example to say that I get depressed always reading about such stuff even from people I don't even know.