1- You will share reels regularly and your videos better be 1920 resolution.
2- After you have normal reels video (like 30-40) on your page, do not share reels videos for 3-4 days.
3- reels video If you don't shoot for 3-4 days, the reels video you shoot will be discovered.
4- If you want the next reel to drop in video discovery, do not throw your reels again for 3-4 days.
5- If your reels video is liked in the discovery, it will be higher in the next discovery. That's why you need to offer quality and beautiful content.