Events not sorted logical

Dear Support Community.
I have created an event listing page and it is working so far, only two issues i found where i need a little help:

1. I have a few featured and recurring events, but the search results does not list all events sorted by date, what would be good, no it is listing only one event abd its recuuring dates. You can check this at https://grillparty.online/grillparty-suchen/ where you can see the correct listing, but not when you search for example for Alpbach, then only one Event with its reccuring dates is shown.

2. In case you search for exmple for “Alpbach” like described above the search resulta are showing also the “” for a not defined keyword search, but not everybody is searching for a keyword or can i switch it off in an elegant way?

Thank you very much for your help in advance,
Oliver