The honest one-liner
Lose It! is a fine calmer alternative to MFP. If the database-search workflow itself is what's burning you out, the camera-first model in CalorieScan AI is the actual fix.
About Lose It!
Lose It! is one of the original database-search calorie trackers, with a calmer UX than MyFitnessPal and a strong community feature called Snap It.
Pricing: Lose It!: free tier; Premium ~$39.99/yr. CalorieScan AI: free tier (no ads), Premium $9.99/mo.
Platforms: Lose It!: iOS, Android, web. CalorieScan AI: iOS only.