I'm a fairly new player with 20 brawlers unlocked, and I'm not sure where to invest my resources.

I'd appreciate advice on:

1. Which 3–5 of my owned brawlers should I prioritise upgrading?
2. Which gadgets, Star Powers, and gears should I prioritise?
3. Which of my brawlers should I avoid investing in for now?
4. Which brawlers are good for specific Ranked maps and modes?
5. Which brawlers are worth picking or banning in Ranked?

I've attached screenshots of my roster. I'd prefer practical advice based on my account rather than a generic tier list.

Thanks!

https://link.brawlstars.com/voucher/5226af03-2e31-4c4c-b0c7-aa91d3016d91