Act 1976, allowance is mad for FAIR USE for purpose such a as criticism, comment, news reporting, teaching, scholarship and research. Fair use is a use permitted by copyright statues that might otherwise be infringing. Non- Profit, educational or personal use tips the balance in favor of FAIR USE.
KZread takes copyright infringement very seriously. They take off the sound from a video when it is reported or marked for violating music copyright.
The sound will be taken down by KZread if the musician hasn’t signed a license agreement with the platform in order to collect royalties. If you think the music is protected by the Fair Use Copyright Act, you may be able to challenge the copyright infringement complaint to get your music back.