If I'm recording in a coworking place (private office): go to the office on Sunday morning, or record between 6am-8am 🙃. If there is noise (door smashing somewhere, etc), pause, start talking again, and cut when editing.
If there are dogs in the background, wait (and sometimes swear) while the dogs are barking, and of course, cut all that when editing.
If it happens that there will be construction nearby and it's just too noisy, take the day off or do something else.
Then on top of that, to remove unwanted reverb, I use pillows, blankets, clothes, or acoustic panels. (although this doesn't remove background noises, it's only for reverb and getting a cleaner voice)
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