Welcome to Android Central! The "Removed Apps" listing simply accounts for data that was used by the apps
before they were uninstalled. As you continue to use the device, that listing should gradually disappear (unless you keep uninstalling more apps that were using data).
To help figure out what's causing battery drain, it can help to see battery stats. Charge up to 100%, then let it drain to 20-30% with normal usage, without charging in between. Then show us:
1. The main
Settings>Battery screen.
2. The fullscreen battery graph screen (which shows Awake time and Cell Signal Strength).
3. The Screen category (to see total Screen On time).
4. The Cell Standby category, if present (to see Time Without Signal).
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