In the Welsh Speaking Practice Slack group there is a dedicated channel for anyone who wants to speak Welsh with others in the time zones of the American continent. It’s called #the-americas and if you can’t see it initially in your list of channels, you can search for it by clicking on the ‘Channels’ heading and looking through the list. Once you find it, click on ‘Join Channel’ and you’ll be in.
Some of the people in the channel are starting up a regular group chat using the ‘Jitsi’ communication software. This is free, but needs to be installed as the Jitsi Meet app if you’re using a mobile device. Otherwise it works well with the Chrome and Firefox browsers. You’ll see the link to join when you’re in the channel, and if you’re not sure what to do others will help you.