Hey, is there any way that I can deepen my voice without testosterone? I'm under the age of 16 and my parents are transphobic, to testosterone isn't an option. I can't afford a binder and I can't sign up for a binder charity because I can't risk my parents finding out, are there any suggestions?
Sports bras are good alternatives to binders. The proper ones designed to hold your chest flat while exercising, not the ones with cups and padding. If you wear one combined with a baggy shirt or layers it tends to smooth out your chest and hide any sneaky bumps.
As for voice deepening, the trick I used was learning how to project/boom my voice and speaking from my chest, rather than my throat/head. There are some good videos about it on youtube. Here are a couple of videos to get your started:
https://www.youtube.com/watch?v=CCwI2GAwH3c
https://www.youtube.com/watch?v=Ag2GwZRIZw4