Nothing wrong with waiting for other people to come to you in social situations

Yeah true, I agree. It definitely depends on the situation as well. Sometimes it's best to wait while other times it may be okay to initiate. And yeah in terms of inserting yourself, it is probably not a good idea to do it with people you don't know. It's one thing if you see a group of friends your close to and you join them in their conversation but it's another thing to insert yourself into a conversation with people you don't know as a means of trying to get to know them or make friends. You're right, not everyone will want to talk. Some are more private than others.

On the contrary sometimes you Do not get an invitation simply because you have an admirable personality,who has in depth knowledge and despite being introvert may take attention away from other people.They save their inferiority complexes by not having you around.I have faced some situations myself,where a host just does not introduce me to even a single guest.So what I do is ..next time I do not honor their invitation. I guess they also do not want me to attend.☺

yeah you would think it bad to just insert yourself into conversations or initiate with strangers isn't a good thing but that just kind of shows yours (and my) perspective on social interactions, whereas there are quite a number of people that see nothing wrong with that. I don't like it but it's not like I don't experience people that just want to pop in and say hi for no apparent reason. lmao. I find it awkward and intrusive but I know also that this is just my own personal take on it.