I am a huge fan of open-source software, for the sole reason that they actually care about user privacy and are transparent.

As for all other reasons (quality, output, ease of usage, free/paid, cross-platform, etc) are similar in both open source and proprietary software.

We always have a choice of software when trying to do do something, but I believe this choice is getting harder day-by-day.

Just see how many apps are there in Play store/App store? there are tons. How many of them are good to use, free, and without ads/in-app purchase? not so much.

Not to mention the privacy permissions required by these apps are unbelievable.

It isn't about open-source vs proprietary software, it is about a software product which does what user expects it to do without anything else which user didn't ask for. Right thing would be to have a careful combination of both in your pallete without compromising much of your data.

Due to these reasons, I tend to use desktop apps/websites more than my smartphone apps.

Below is the list (non-exhaustive) of some softwares which I personally use and recommend: