These Sonarr naming settings are simple and work well 99% of the time:
Replace Illegal Characters: Unchecked
Standard Episode Format:
{Series Title} - S{season:00}E{episode:00} - {Episode Title}
Series Folder Format: {Series TitleYear}
Season Folder Format: Season {season:00}
You can get into a weird state if some of the shows are named poorly and get merged together. Once that happens you can’t just rename directories to fix it. You have to Split Apart and Fix Match the problems, or do the Plex Dance and try again with corrected file & directory naming.
