I recommend that you try asking this question on the ManaCube discord server in the #Survival section, you're more likely to find a quick response there than the forums. Have you tried asking in-game yet? Also, a lot of people don't invite new/non-ranked players to their parties due to 'trust issues' I bet that if you play for long enough and get to know the player base you'll have a higher chance of success.
- TheProTroller