/ip firewall filter
add action=drop chain=forward dst-address-list=TikTok src-address=192.168.50.0/24 comment="Blocking TikTok using RouterOS"

/ip firewall mangle
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.tiktok.com src-address=192.168.50.0/24 comment="Detecting IP Addresses TikTok"
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.tiktokv.com src-address=192.168.50.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.tiktokcdn.com src-address=192.168.50.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.byteoversea.com src-address=192.168.50.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.ibyteimg.com src-address=192.168.50.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.ibytedtos.com src-address=192.168.50.0/24
add action=add-dst-to-address-list address-list=TikTok address-list-timeout=4w2d chain=prerouting content=.myqcloud.com src-address=192.168.50.0/24