So are the avatar in there like agatha are only for higher lvled people because none of my pets do any damage to her and she wipes them out in two attacks seems unfair to me if only the high players can defeat them

Just wanted to know if a lower lvl player could defeat them or not

The nameds are possible to beat at low levels if your team is set up well. After lv60, they actually get /harder/ to beat, 'cos there's such a difficulty curve for lv60+. At 65 or 70, though, you do have the advantage of having more attacks in your arsenal.

Just glancing at your team:
-Any fight will be easier if you can get your party pets up to the same level as each other.
-Make sure to give your Earth pet her proficiency point.
-You might consider switching either fire or air to light - having a healer on your team can help quite a bit.
-Try to get better equipment for them. Green and blue stuff is better than nothing, but it's not that great. If you can get legendary equipment for them, it'll help a lot. Check the broker, maybe. Even all epic equipment would help.

Hope this is helpful.

Edit: Also, it's worth noting that some nameds are 4-stars and some are 5-stars. The 4-star ones will be a bit easier to beat.