Block TikTok using Mikrotik

/ip firewall filter add action=drop chain=forward dst-address-list=TikTok src-address=10.0.0.0/24

/ip firewall mangle
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.tiktok.com src-address=10.0.0.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.tiktokv.com src-address=10.0.0.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.tiktokcdn.com src-address=10.0.0.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.byteoversea.com src-address=10.0.0.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.ibyteimg.com src-address=10.0.0.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.ibytedtos.com src-address=10.0.0.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.myqcloud.com src-address=10.0.0.0/24