This is because your TV play cache takes up a lot of storage space, which leads to the slow operation of your mobile phone.
I suggest you download Tencent Mobile Manager in official website.
Open Tencent Mobile Manager-Health Optimization-Garbage Cleaning-Garbage Scanning-Cleaning TV Play Cache
The cache cleaning of Tencent Mobile Manager includes the cleaning of software cache, junk files, redundant installation packages, system cache and software uninstall residues, which can ensure that the mobile phone is thoroughly cleaned.