Noise Reduction Plugin Premiere Pro Work
Don't expect one plugin or setting to fix all noise problems. Address constant background noise (hiss, hum) separately from transient noises (clicks, pops, mouth sounds). Address low-frequency rumble separately from high-frequency hiss. This targeted approach produces much cleaner results than a single heavy-handed noise reduction pass.
Premiere doesn't have a dedicated "Video Denoiser" effect like some other software, but there are reliable workarounds and industry-standard plugins. How to DENOISE Grainy Footage in Premiere Pro noise reduction plugin premiere pro work
The plugin looks at the energy level of each frequency band. Don't expect one plugin or setting to fix all noise problems