For reasons I can only describe as ignorance of consequences, lack of vision, lack of understanding how publishing works, and a touch of ego, I never considered a pseudonym when I first sought publication.
It seemed a needless complication, because one’s legal name is straightforward and pseudonyms suggest expectation of an illustrious publishing career. In addition, a pseudonym says you are hiding, which means you have something to hide.
I now wish I knew more back then. Pseudonyms are more than a form of protection, (because most who write never get the harsh bright lights of mass recognition anyway) they are distinct public personas and thus “brands” of sorts, and many find this very helpful creatively.
A pseudonym is employed when writers write in divergent and incompatible genres. Think kidlit and erotica, or kidlit and politics, or kidlit and most genres not kidlit.
A few years ago, I met a much-published writer who wrote in three distinctive genres. She used one pseudonym for her mysteries, another for her erotica, and her legal name for literary novels. She is by no means a household name in any of her three author identities. But she did admit her strongest income stream was from her erotica writing. No surprise there.
She said the different names helped her stay creative and focused. I understand, and no longer find this practice a wee creepy, like I used to.
Add to this consideration the matter of privacy, barely possible at the age where the Interwebs give your home address to anyone who will pay a few dollars, (and even free) as another name has a layer of security, albeit a thin one.
I never considered it, and even my social media presence (such as it is) is all-public. Easy, as I’m not famous. But if you are just starting out and foresee seeking mass recognition, think about it and see if a pseudonym will make you creatively better focused and feeling more secure. If you choose to go that way, have fun with the choice of pseudonym because having fun on this journey is what will keep you going.