i know little about MTG, but my 9 yo is getting into it. I have bought quite a few toolbox, starter, booster sets, just to relize we still dont have compeartive decks. So, with what we do have, can someone look it over and give me a couple ideas/lists of decks we can build that wont suck? Thanks!!!!

https://deckbox.org/sets/1831577

What you have is just a butt-ton of bulk. Planeswalkers aside, you don't have very much to work with. Buy specifics, not booster packs/toolkkits/boxes/bundles. I would get onto Pucatrade (or use the deckbox trader here) and trade for some better uncommons so that you can build a better deck.
With what you have though, I would try doing something with Nissa, Steward of Elements, and possibly try to trade for another one of them. With MtG, you want to run at least 2 of each planeswalker in a deck. You could very easily do a pseudo-merfolk deck with that version of Nissa.

Hope this helps!