JIRA - could you explain the filters to me?

Good afternoon. I don’t really get the filters in JIRA but need to use them. Is there some kind of documentation available that would explain the use to me? I would also like to know if there are any good add-ons that may make them more userfriendly? Thx.

Yes, the official Atlassian documentation explains the filters really well: Saving your search as a filter | Jira Core Data Center and Server 7.2 | Atlassian Documentation

Regarding the add-ons, you would want to visit the Atlassian Marketplace and search for “filters” and you will find a lot of useful options there: https://marketplace.atlassian.com/