In many cases, "CIDFont+F1" is actually a common system font that has been renamed, such as: (often Arial Bold) Times New Roman Tahoma How to Resolve Missing Font Errors

Included with Creative Cloud subscriptions for professional design. CIDFont+F1 issue - Adobe Community

The true original is not legally free. You may find fan-created recreations (e.g., “F1 Cid Regular” or “Cid F1 Normal”) on personal font blogs, but these often lack proper licensing and may contain malware. Use at your own risk.

For a safe, free, 99% similar look, download Racing Sans One or Titillium Web today.