Finding a server will be hard until we have more players unfortunately.
As for practice tips, the key is to get combination scores by going through the scoring ring without dropping the disc. Because the disc goes towards whichever direction you are pointing, you want to point the controller back at yourself after passing through the scoring ring so the disc comes back towards you. When it's close, aim the controller back at the scoring ring - or you can even catch it if you wish for a little score boost (catching the disc does not break the combo).
You can get some extremely high scores with this method, though of course the scoring ring moves faster and faster as your combo increases.
Thank you for playing! It's great to get some feedback!