Alternatives to drawers in UI?

To assure the best UX in complex web applications, with a lot of information, what alternatives would you recommend to a simple drawer?

& if using a drawer, which should we consider as a best practice: Push or overlay?

Here you can see a simple drawer: material.io/guidelines/patterns/navigation-drawer.html (not sure if I can share the real example I'm working on). In the link I'm sending, it is mainly menu and sub-menu drawer.

But in the case I'm working on, the drawer has inside actions incorporated (such as list of tasks, search tools, folders exploration...)

It can get confusing for the complexity inside of a 'light moving element'. The problem we're trying to solve is the confusion/density/complexity attached to this element, turning it somehow 'heavy' when integrated with the rest of the dashboard.

Thanks in advance!