Ubuntu does not come with Gwibber any longer; the package named "gwibber" (and some additional packages like "gwibber-service" are so called "transitional dummy packages" to facilitate the switch to friends-app. If you look at the Gwibber project's pages on Launchpad, the newest packages there are about two years old, so it seems to me you're out of luck, sorry.

Of course you can try to compile the old source code yourself, but I wouldn't recommend it. There probably are a lot of dependencies in that code that were satisfied on older systems but are not satisfied on current systems. So it would probably take a lot of work to get it to compile, without any guarantees that the resulting program will work in any decent manner.

If friends-app isn't your cup of tea, you might want to have a look at some other clients for your favorite social network that are out there. For Twitter, for example, there are Polly or Birdie, among others. They follow different concepts and are on different levels of stability/maturity, but are worth a look.