Any success with an indoor FM antenna?

Sadly I've had plenty of bad experiences. The amplified antennas rarely helped. What does help is being able to set up an antenna as high as possible and turning it. Even the cheap free antennas that come with a tuner/receiver are pretty directional.

Indoor antennae are all pretty much the same in my suburban experience, you do need “something “, but costly ones were not much better than cheap ones. That’s for where I live and can’t be a general rule.

You may be surprised what a simple, inexpensive dipole can do. 
Performance is like real estate-location. 

https://www.parts-express.com/fm-dipole-antenna-with-f-connector--210-608

I get a strong 8/9 out of 10 signal strength with the Classical and Jazz stations on my Mac MR71. A proper rooftop, is the only way to hear what the FM can really sound like.

Hey, this may not be what you had in mind but I gave up and listen to terrestrial radio on my streamer over the Internet.  The local stations that I care about and many good stations across the country (some familiar from where I’ve lived over the years: NY, Chicago, Los Angels) all have their broadcasts set up on the Internet.  And the biggest thing about this is that it sounds great.  So much better than any antenna I’ve ever tried.  
You can get a little $40 - 100 gizmo to try it or spend 550 to get a Bluesound node2i that will maybe give you more options (digital out particularly) that you can use for a music subscription.