Canva has the best aesthetic wallpapers and motivational phone wallpapers! Their images are trendy, cute, and have many different aesthetics. Even with the free version of Canva, you can find many beautiful stock photos. I use Pro, and that's even better. To find the best wallpapers online, search for cloud aesthetic, rose gold wallpapers, neutral lock screens, cottagecore aesthetic, Christmas wallpapers, or whatever aesthetic you want!