MySQL Replica Synchronization Help Needed

I'm currently facing an issue with my MySQL replica. Although there are no errors, the data isn't being synced and the "Seconds_Behind_Master" is consistently increasing. I'm looking for a professional who can help me with this problem.

I can't give you access to the server(s)
but we can troubleshoot together.

Key Requirements:
- Expertise in MySQL command line
- In-depth understanding of MySQL replication mechanisms
- Experience in troubleshooting replication lag
- Ability to work quickly and efficiently

Max 50 euros.

Thank you.