Hi, well, I think the architectures are a bit different as well as the amount of space needed. The normal thing is that for the installation of Joget you have a system to which you have access through a linux console to make adjustments, from that point the installation is "relatively" easy. But it is not usual for you to share the server. On the other hand, if your hosting is managed through, for example, cpanel, I do not think it is possible to install joget, since some more basic components are needed that can not be managed through this system. What are the specifications of the server that you have and through what means do you manage it?

Wordpress runs on PHP Server. I think you will need to install a Java web application server separately in your server (i.e. tomcat) to host Joget.

you need a full dedicated server or maybe Virtual Private Server(VPS) to be able to do that. shared hosting is limited.