/vt/ - Virtual Youtubers

I've been thinking strongly about applying for Nijisanji recently but a couple factors are really holding me back. I would want to be able to present and entertain with high energy to keep things active, but I really don't want my roommate or neighbors to ever overhear me while I'm streaming. This goes double if there is literally any degree of attempted singing or roleplaying involved.
I have little to no experience with streaming, singing or roleplaying but I really do want to try because for all I know I could be okay, but the embarrassment factor is scaring me off.
I know there is appeal to calm, lower energy streams and I would be very interested in doing those but I feel that there is a strong need to be able to bring energy and excite viewers. I don't want to just whisper into a mic for hours.
What are the best options for soundproofing apartment rooms, or are there any consistently calm and low energy vtubers or even regular streamers who I could look to for styles that don't make a lot of noise but still can entertain viewers?