I just want to find a good quality, well-working proxy that will not give me problems. If you know a provider that offers such proxies, I would be very grateful.

Are there proxies that you have to mess with? I just have not had a case for a long time where I had to set something up from scratch and manually. Maybe it makes sense for you to just find a decent provider who will not mess around but will give you a full service as a client. I like FloppyData now, click here to see what options they have. They generally have great proxies that I have been working with for a long time, and now they also have recommendations for anti-detect browsers for specific tasks like multi-accounting.