It’s only natural to want to be in a relationship. And nothing wrong with having high expectations. Provided that those high expectations aren’t superficial in nature (like focusing on looks).
For me it feels better to be in a relationship if it’s very good. If it’s not, it feels better to be single.
I don’t think people are happy/satisfied in their marriage/relationship just because they have low expectations. It kind of diminishes and degrades their marriage. I refuse to think poorly of other people’s marriages (and mine own too).
The key is to meet right person. Not perfect, but right. Life us too short to waste it on wrong matches
As about dating, yes it’s not easy, time consuming, risky and stressful. Unfortunately unless we are in arranged marriage, we got to date to meet the right person. So you got to take risks