The people who don't like socialism mean something else. To them, socialism is when the government takes care of you and your neighbors. This is scary and can go badly: sometimes the government does not know your needs, isn't paying good attention, or is making choices in a bad way. There are examples of governments that said they would take care of everything for everyone, and then many many people didn't get enough food.
People also worry about a little socialism, because when the government takes care of some things automatically, it means local communities don't have to worry about those things. Then the people in the community forget how to do them (imagine tasks like building houses) themselves, and that makes them more dependent on the government. This is also scary, because in an emergency (like after a flood) you might not be the governments first priority. It also means that you can more easily live in a place without being part of a local community (like a church), and that loss of close friends makes everyone more lonely and sad.
It's not clear that the people with these worries are right. Other systems also have problems, and so even if there are good concerns here, maybe socialism is still best.
Remember to look for nice people who disagree with you, and listen to their fears, needs and dreams. It is easy to end up in echo chambers, and feel like everyone who disagrees with you is dumb, evil, or crazy. But usually we only see the loudest (not the smartest or kindest) voices that disagree with us. Algorithms and popularity contests online really like to reward things that make you angry.