genecistech ideally, voice feminization surgery should be a last resort as it's one of those things that can be trained. There are women with a slightly deeper voice, usually seen as attractive by the vast majority to have deep, resonant, and strong voice. High pitched cutsy anime-like voice is not functional in real life. So, try techniques and vocal training like @suchitra suggested and go for surgery as a last resort if you still feel dysphoric about your voice. As far as I know, complications from the surgery are rare, but there are cases reported with tightness, mimicking symptoms of laryngeal dystonia, or getting a voice much higher than what you were hoping for. These complications are rare, but do happen. It's much better to naturally train your voice to be higher if at all possible. Of course, if you have a too deep and booming voice, then surgery might be the only way.
