Start by reading and following the pinned post in this very forum about how to ask for help with an issue
Please post a log with your issue! Here's how...
Yea, OBS is sophisticated, so audio can get complex. Free software means onus is on the user to figure it out
I found this recent conversation to be helpful in understanding OBS audio
Do I need to use VoiceMeeter with OBS
And you haven't explained what you have working vs not. So is audio inputs even working correctly to begin with? Are you using the default MKV format, or something else? and what are you using to listen to what you've recorded, as depending on video recording format/container/encoder used, and if multi-track, not all video players will recognize all tracks (not OBS fault)
I understand frustration, but you haven't provided enough info for anyone to provide a truly useful response
Under Source Audio Input, can you hear your audio? Do you read the OBS guide regarding audio and understand implication, like Advanced Audio properties especially Monitor vs Output implications? Have you started simple and not enabled any advanced audio effects/filters, etc?
Sorry, I used OBS default, hooked up webcam and recording audio and video just worked. I ran into audio issues until I disabled Default Desktop Audio (and all the other global audio devices) and only used specific Audio Inputs per scene as desired [yes, there are better ways, but mine worked, is full-proof, simple, etc... so works for me]
We look forward to helping you