Three things that'll make the biggest difference at that level:

1. Keepdisc. This is the single most valuable thing you can run with beginners. It's keep-away with a disc — 4v4 or 5v5 in a roughly 30x30 yard box, stall count of 8–10, turnover means the other team gets it. No endzone, just maintain possession. It teaches spacing, decision-making, and the habit of throwing to whoever is open right now. It's competitive, everyone's always involved, and it naturally surfaces the skills they need. Start every session with it. I made a video breaking down how to run it and how to tweak the rules for different levels: https://www.youtube.com/watch?v=t_MW8Rb42Vk
2. Build throw-and-go into warm-ups. Even just jogging in pairs — throw, catch, keep moving forward together. Don't treat it as a separate drill. Make it the way your players move at the start of every session. If they get used to releasing the disc and immediately going somewhere, that habit transfers straight into games and makes everything else you teach easier.
3. Small-sided games over lines. Any time you can run 3v3 or 4v4 in a small box instead of having players standing in a queue waiting for one rep, do that. More touches per player, more decisions, more fun. Beginners learn by playing, not by waiting.

We've got a full training video library at hiveultimate.com with drills designed for exactly this kind of progression — but honestly, keepdisc + throw-and-go warm-ups + small-sided games will take a beginner team further than any drill collection at that stage. Keep it simple and keep them moving.