It depends if you want to do it as a hobby or a profession. (I don't recommend going pro, the market is saturated and DEI up the ass)

If you want to do it as a hobby I recommend Blender (start with the Blender Guru's donut tutorial), Blender is great and keeps getting better and MORE optimized while other softwares keep getting bloated, if you want to texture for game characters you must also learn Substance Painter, but it is a marvelous and intuitive software and 100% worth it. Buy it on Steam, it is a one-time purchase.

If you want to get into the industry, it's probably better to invest on what they are used to, ZBrush, Maya...

If you want to model realistic characters, beautiful characters, etc. then you MUST learn from eastern Asia artists, they are the top of their game, Wingfox is a terrible platform but it has great artists. If you are on a budget, I recommend FlyCat on youtube, the guy is a legend.