You can use wordpress automatic plugin to post videos from youtube to your wordpress account for any channel
the channel id appear at the channel link after the “channel/” part
as example here is a youtube channel link
the id for this channel is “UCv2oaoQ9-yq2ZWkGPDQaUZw” without quotes
What if the channel link does not contain the “channel/” part?
let’s say you have the channel link with the user other than the channel id like the following link
with this link there is no channel id appear at it so do the following to get the channel link from this link