Need a PS4 to continue playing or streaming games

My playstation 4 doesn't work properly anymore and trying to get another one. I stream games on twitch and youtube for entertainment for others to watch. Unfortunately my Playstation 4 is dying and there's not much I can do to keep it going. I have been working on the system and repairing it when I can but it's getting to the point that it getting too costly to keep repairing it. It would be best for me to just get another cheap used one that works that wouldn't require constant repairs. Any help would greatly be appreciated so I can keep playing and streaming games.