If you're looking for a Magicsnap alternative, Lucidpic is a good choice. It's got AI abilities to create hyper-realistic people imagery that's good for avatars, stock photos and custom characters. You can create photorealistic avatars from a single photo, and you can control every aspect of the image, including clothing and hairstyle. Lucidpic offers a free tier that'll let you generate up to three images, so you can try it out without breaking the bank.
Another good option is Wonder-AI, which turns your selfies into different characters and styles. The platform lets you become anime characters, Disney princesses or other characters you might imagine. The interface is easy to use, letting you create portraits and then return to the starting point to generate new images. That makes it a good option for creating YouTube thumbnail images or just exploring your creative side.
If you want something more interactive, xpression Camera is a good choice. It instantly turns you into any face or persona with a single photo, letting you create videos, GIFs and memes with real-time changes in facial expression. That's good for content creators and anyone who wants to spice up their online presence.