Movies , audiobooks ,rarely apks and PDFs

Congratulations

Unfortunately alternative are closed source (ADM , IDM ) , I’ve heard that free download manager was open source but even if it’s still , I won’t recommend it because it was reported that it redirected Linux users to malicious links

I’ve always found download managers to be faster than browsers in downloading

Simple apps version 2 , which app is next ?

Nothing wrong , I just wanted to know if there are other alternatives

The examples I know are officially published by their orginial developers

Sure , indeed there are some foss app that are the same as you described

afaik there’s no one… The best you can do is to use the web instead of the app , better with Firefox + Ublock