Hi Ivonne
You can do it with Jira, but in my point of view, Jira is not the right tool for waterfall projects. The main capabilities of Jira are in the area of ticketing, sprint planning, and kanban. There might be a possibility to construct a kind of waterfall project…
Taking into consideration the size of your company, Clarity, PlanView, Micro Focus PPM and Planisware are all oversized for you.
I recommend Jira Software (from Atlassian) combined with Tempo Apps. This Software is affordable, cloud-based and easy to manage.