Underqualified according to the requirements profile? This way you can still get your dream job. Indeed.com: If you meet around two thirds of the desired criteria, it is worth applying.
In their job advertisements, companies often require that applicants already know specific systems. If you don't do that, it doesn't have to be an exclusion criterion. It is generally well received by companies if you signal your willingness to learn in your application. You can also score points with an interestingly worded, individual application in which you specifically address the company's values and goals.