THE_METER's desktop app picks up your DAW's audio through shared memory, so you get real-time visuals for Reels, Shorts and livestreams with zero routing and no virtual cables.
Streaming turns every master down to about -14 LUFS, so a -6 LUFS master with 4 dB of dynamic range ends up sounding weaker than a -14 LUFS master with 10 dB. Keep 9 to 12 dB between peaks and loudness.