Film Scene Audio Noise Reduction

I’m polishing a 1-minute-18-second movie scene that has background noise that is too loud. under I need that background sound cut by about 60–70 % while keeping everything else authentic. The dialogue already sounds good, so its tone, clarity and timing must stay exactly as recorded... (Budget: $25 - $35 USD, Jobs: Adobe Audition, Audio Editing, Audio Engineering, Audio Mastering, Audio Processing, Audio Production, Audio Services, DaVinci Resolve, Music, Sound Design)