For me it’s the PVE part of Elder Scrolls Online (PVP can be more toxic). Everyone there helps each other. New players are always welcomed and can always ask questions. Guilds with people ready to help at bosses, dungeons, crafting, … Just a great community.
Also have to mention Deep Rock Galactic. Rock and Stone, brother!
What makes eso good? I’ve tried it. Didn’t get last like level 10.