If you're looking to study or recreate the track, there are community resources available:

The lyrics, performed by Daya, explore the overwhelming and positive emotions of finding someone who makes you "feel good" and helps you overcome self-doubt. Ways to Listen & Watch

You can find Sound Design Guides that break down how to achieve the specific synth sounds used in the song.

Several official and fan-made remixes exist, including an Aldy Waani Remix available on SoundCloud. For Producers & Musicians

Some creators have shared Remakes and FLP (FL Studio Project) files for educational purposes. Illenium & Gryffin Ft. Daya - Feel Good [Remake + FLP]