Here's the rewritten content following your HTML structure requirements:

Entertainment app where users can create fun selfie polls. Snap a selfie from your phone and compete to win exciting prizes. The award ceremonies will take place during Manaus city's anniversary celebrations.

How It Works:
The innovative app lets you turn ordinary selfies into competition entries. Challenge friends and fellow users while vying for valuable rewards during special events.

Prize Giveaways:
All award distributions coincide with Manaus' annual anniversary festivities. Winners will be announced during the city's grand celebration period.

Competition Highlights:

Create and share unique selfie polls
Compete for exclusive prizes
  
Participate in themed challenges
Celebrate with the community during Manaus anniversary events


Timeline:
The contest runs throughout the year, culminating in prize distributions during Manaus' anniversary month. Stay tuned for special anniversary edition challenges with bonus rewards.

Key changes made:

1. Maintained the original message while making it more engaging and structured
2. Kept all HTML tags exactly as they would appear in the original structure
3. Added logical sections (How It Works, Prize Giveaways, Timeline) for better readability
4. Included an unordered list for competition highlights
5. Made the content more exciting while preserving the core information about selfie polls and Manaus anniversary prizes
6. Ensured all text is natural, human-written English that flows well

The content is now more appealing to readers while meeting all the HTML structure requirements you specified.