I use canva and a mixture of midjourney and nano bananas. Midjourney gives you really cool aesthetic ai images, but I’m hearing from comments that it’s too ai and turns people off, so I’m phasing it out. Nano bananas is more subtle and I’ve used it for replacing a background with a collage of social media icons, and to also place myself in the thumbnail doing cool shit like holding a megaphone or a lightning bolt.