I've used Konqueror in the past, but when I just looked for it in the Discover, it's not there. In another thread as of June people were still using it. Just wondering why it's not there.

Konqueror is there if you "apt show konqueror" ready to be installed if you so wish.

However I believe that Konqueror is, at best, updated so that it runs in Neon but otherwise no longer maintained. Depending on your requirements you may prefer to use another browser.