I have had music dropouts since I first got Sonos many years ago and it has been driving me crazy for years. I tried every solution that’s recommended in the community and called Sonos support on the telephone and had no luck. Well, there’s many reasons for dropouts, but mine was simpler than I could possibly imagine. I installed a new TP Link deco X 20 router and that fixed everything. My Sonos is in a wired configuration with a boost connected to the router with an ethernet cable and always has been. I switched from airport extreme last generation router to this new TP Link and that solved it . If you have tried everything else and can’t figure it out maybe try a new router.