Being able to sing on pitch is more music training than voice training. Music can be trained in any voice pretty much. As for vocal range - it is one of the easiest ones to improve! Simple daily drills can get you there. It's the same for simple voice quality things like learning to sing from your chest/diaphragm rather than just a head/nasal voice. As for having an "aesthetic voice", the steps needed is is extremely specific to each individual and each trainer. Both of you will "path" towards something that will be aesthetic for you and also achievable. Musicians e.g do this to adapt themselves to the "beloved" voice of their target industry. For an example, see https://www.google.com/search?q=arijit+singh+voice+transform... - the AI overview is a pretty decent summary with links to original source. Bollywood really likes love songs to be in husky male voices, so he adapted to that. You don't have to do all that of course, but a small % of similar work will get you to "aesthetic" territory.

Listening to lots of vocal music (preferably with very light accompaniment) also helps a looot. We are really good at imitation.