1. You should immediately review any existing strikes on your account.
You can do that here. There are instructions on that page for ways you may be able to resolve any strike that was the result of mistake or misidentification.
2. You should also review all your uploads and fully delete any that might have copyright issues.
You might be tempted to change the privacy setting of any videos you may have questions about, but the DMCA process applies to all videos, regardless of privacy setting. It is important that you fully delete any video from that site that you don’t have all the necessary rights and permissions for, including any applicable music licenses.
3. Moving forward, you should be extremely vigilant about every video you upload.
Vimeo is required to remove videos and assign strikes regardless of the specifics of the video. The best way to avoid strikes is to make sure that you only upload videos that you are 100% sure of. Even then, we may receive a takedown notice and have to remove the video, but there are methods for challenging mistaken claims.