What #rss reader do you use? Looking at something that syncs between my desktop and mobile phone. I’ve heard of #FreshRSS and don’t mind #SelfHosting either.
You can try it with a free account at newsblur.com, but if it's what you'd like then it's self hostable too.
If you want something a little more lightweight, with a different approach to filtering, to self host then #tt-rss is worth a look.
Pair either with #huginn to pull in #rss feeds from places that don't have them or that need pre-filtering.
Happy to give pointers to getting these going, if you need them