i've been through several mics and my fave so far for my voice is the samson q2u. lotta ppl will rec a condenser mic like the yeti or snowball and i get why (they have a wide range so beginners don't need as much vocal control, your voice can sound crisper/"truer" with all the sound caught like that), but condenser mics really shine in a very well treated studio and can be finicky in a home studio. also they're physically more fragile than a dynamic mic; you shouldn't be dropping or throwing a mic ofc, but condensers take more environmental damage, and too long in a humid place will cause crackling and whining.)
i have a loud/high pitched voice and also have some background noise/reverb issues, and a dynamic mic like the q2u minimizes those problems and the distortion from my loud voice better than most inexpensive condenser mics for me personally. plus it's both usb and xlr, so you can start usb and upgrade to xlr later by just getting an adapter/interface instead of a whole new mic if you decide to. it does run a little quiet so you have to be pretty close to it, but ideally you're like a fist-length away from your mic anyway (and have it turned at an angle to avoid popping sounds/mouth noises)
(the audio technica atr2100x is comparable, and other good brands are shure, rode, and neat, which i think also have condenser mics too if you prefer those. admittedly as far as neat i just really like their bee theme, but i had an ~$80 condenser mic from them years ago that had fun bells and whistles on and my voice sounded pretty okay.)
i will say that for mics, especially dynamic mics bcos their range is less wide than condensers, it really does help to go see how they vibe with your voice! if you've got a guitar center or something similar nearby you can go there and they may let you test out their microphones. also you can often find the same mics for cheaper on sites like bhphotovideo, adorama, or microcenter.
as for setup, duvets and closets are great when you are just starting, but you can also buy a few acoustic panels or sound absorption blankets for cheap and just like, hang them up. i glued several panels to pieces of cardboard and hung them in my recording space (....under my loft bed). they're cheap and obvs not as good as a fully treated studio, but i do find that they work better than any of the blankets i already had on hand.
if you can find good bass traps that will help as well--they do something a bit different from audio foam and really do help if you've got a lot of hard surfaces like floor & walls for your sound to bounce off of--but those can be more expensive, especially if you want ones that are specialized as bass traps instead of just the same acoustic foam in a slightly different shape.
even if you're just using a duvet or closet, i made the mistake of just draping a duvet over my head for a long time. this made extra background noise, stifled my breathing, and made me overheat. but you can pick up like a clothes rack or something similar and drape things over it for just as good sound absorption (if you position it well to block hard surfaces) and less interference with your voice.
(a lot of this may seem obvious but it was not obvious to me when i was just starting so... saying it anyway. also i don't do a ton of voice acting anymore since i figured out i like editing more, but from an editor's pov i thought my sound quality did improve as i made changes, and i still act a little in hobby stuff.)
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