Scribus is the Go-To Libre Desktop Publishing Application.

Scribus is a libre page layout program for almost every operating system

Welcome to Scribus, a page layout program for Linux, Windows, macOS, many current UNIX and *BSD systems, OS/2 Warp 4 and variants, as well as Haiku.

Since its humble beginning in the spring of 2001, Scribus has evolved into one of the premier Open Source desktop applications. Encouraged by professionals and beginners alike, the Scribus Team, with support from a large and growing number of enthusiastic contributors from all over the world, is dedicated to develop and improve “one of the most powerful and useful open-source projects out there” (TechRepublic). The leading German IT website heise.de listed Scribus as one the of the best Open Source programs available.

The end of Microsoft Publisher is near. I've tested the top alternatives, and here's what I recommend for both pro and beginner designers.

Basilisk is considered stable software. This means it does not change for the sake of change. Updates are made deliberately, with an emphasis on maintaining existing workflows and minimizing unnecessary disruption.

If you want a browser that works consistently and respects established workflows, Basilisk may be a good fit.

From Waterfox to LibreWolf and Pale Moon, there's a browser for almost every Mozilla dissenter

Pale Moon – The Private, Secure and Fully Customizable Open Source Web Browser
If you’re looking for a fully non-commercial alternative to Chrome that respects your privacy, Pale Moon is built for you.
Pale Moon is an Open Source web browser built on its own maintained platform and rendering engine (Goanna™), available for various operating systems including Microsoft Windows, Mac OS and Linux (with community-contributed support for other operating systems), focusing on customization, security, privacy and extensibility.