The cheaper and faster is just BING (Dall-E 3). For free and extremely easy and powerful. Results are not as good as MidJourney, but if your're starting is a good point.
I'm still at that point.
For videos try Luma. You can animate pics created with Bing.
I've got a lot of pics created with bing, some of them are in my instagram. I'm always short of time to upload more 