Beautiful voice needs to edit properly

I record some audio clips with my female nice voice. I am a beginner and I need to know what are the best settings for effects on Audacity. And if you have some video tutorials please? thank you so much!!! I have a Rode nt USB mic, very good one.
I ruined 3 audio clips I recorded because I did not use the proper settings which I learned from you tube vids but they were controversial. One said in a way and other in the opposite way. My voice sounds sometimes like a robot and is too loud.
I also want to make it more warm and seducing as I record erotic clips.
I have a clip where the noises from police siren were heard from outside and did not know how to take them down.
Yes. A beginner.
Thank you so much.

Do you have a goal? “Make my voice pretty”…and then what? Are you singing? Do you want to announce for podcasts? Audiobooks? Voiceovers?

Each one can be slightly different.

Yes, it is a good microphone, but you also need a good, echo-free, quiet room to put it in. You shouldn’t ignore this step because if you record in your noisy kitchen, that microphone will make it sound perfectly, exactly like you’re recording in your kitchen.

We can’t split a mixed performance apart into individual voices, instruments, and sounds. So you’re stuck with the police siren.

In my case, I have a very nice quiet room, but I still have to wait for the Metrobus to go by.

Koz