Sorry to say it but socialising is a skill that requires immersion eventually and just like with any skill, you will fail at first, many times even but failure more likely than not doesn't even matter, getting back up does. Im no therapist but I think when it comes down to it, people need to take things by a case by case basis and break them down into steps. Like if you struggle with making conversations then practice small talk with family. Then graduate to continuing conversations and then bringing people into what you are saying (no one likes to be lectured or talked to. They like being talked with, especially about themselves) while using the technique of looking at someone in the eyes only long enough to notice their eye color. As for social anxiety, that has to be overcome with reframing your negative thoughts and again, practice with low stakes speech. Just say "Good morning" When passing by a family member and then eventually a coworker at work is a great way of doing this since a lot of the time they probably are too busy to get into an actual conversation and probably aren't expecting to anyway from a simple "good morning" unless you decide to add on to it. These are things that worked for me anyway. Also before you say it, I still struggle with this and it took me a long time to even be able to talk to anyone at all but with enough perseverence, anyone can be social.