As a younger voice actor myself I understand the higher voice is hard to work with so here’s what I do to make my voices sound better, make a little fort, so take two pillows, one behind you and one on your stomach, then take at least two blankets on top of you for maximum sound dampening (it will make background sounds quieter) Then what works best for me is using filters to make my voice lower then add the filter you used because I really liked it, good luck ☺️