Davis meetdilip Just to expand on what Davis is saying, it's possible to use/install Flarum on shared hosts, with some caveats.
If your shared hosts allows SSH, you should be fine. Flarum installs via Composer, which needs to run on the command line (although a web solution is in the works). It doesn't require su
permissions though, so it should be possible so long as you have SSH (and the other requirements).
For other hosts without SSH, it's a bit trickier. You can set up a local webserver to install, and then upload the files, but there's a few more configuration steps that need to be taken, and this isn't an official (or supported) means to install Flarum at this time.