I don't have a girlfriend and I feel as lonely as possible. I may not mind starting an acquaintance, but I do not want new acquaintances to grow into something serious.
What would you suggest in this situation?

I can suggest you not to fight and be braver. It is difficult to meet new people. However, in most cases, new girls are just as embarrassed on dates. So you are in the same situation. to feel more confident in communication, I advise you to read this article in more detail https://blog.fling.com/how-to-get-your-next-date/ there are good tips on what to talk about and what to do to the acquaintance turned into a date. I think you will be interested to know.

I'm not too sure that the blog post will help me overcome my shyness and insecurity, but who knows. Maybe I should read more about her.