Viddyoze is used to create individual animations. Although an editor is not a necessity to add the animations to other footage or your own audio you would need an editor can be used. A great free one is HitFilm Express! https://fxhome.com/hitfilm-express.
Here at Viddyoze, we used Adobe Premiere Pro, but there are many options out there so it is recommended you do some research to find the best one for your needs.
We recommend checking out our Insights Session One - covering exactly how you would edit your clips/renders together: https://viddyoze.com/insights/
However, if you are looking for something pre-built, we have a section of templates named ‘Extended’ which are longer and include more images and text fields, much like piecing smaller animations together. You can find these 'extended' templates by using the categories menu on the left-hand side of the homepage