Found a glass screen protector for the Galaxy Watch 4 44m that's available : r/GalaxyWatch
Chok Idea Guardiand Watch Protector - 9h Tempered Glass Screen Protector Compatible For Galaxy Watch6 Classic/watch5 Pro/watch4 Classic,, - Anti Scratch & Bubble Free - Temu
Galaxy Watch 4 44mm Screen Protector | Invisible Defender Glass – Ringke Official Store
3D Curved Screen Protector for Samsung Galaxy Watch 4 5 Pro Full Coverage HD Shatterproof Film for Samsung Watch 4 5 40/44 MM - AliExpress
Case Cover Fit for Samsung Galaxy Watch 5 40mm 44mm, TSV Screen Protector, Soft TPU All-Around Shockproof Full Protective Bumper, Smart Watch Protective Case Accessories for Men Women - Walmart.com