The new Gutenberg WordPress editor does a lot and it is continuously being improved. Even so, if you want more control and features, you would benefit from using a page builder. Elementor was a game-changer for my business. I was able to easily do so much more in shorter amounts of time. Elementor is a fantastic WYSIWYG page editor and page styler with functional widgets.
The widgets or “elements” include rolling number counters, accordions, and image carousels. Elementor (especially Pro) will take the place of many other plugins and will let you customize every aspect of your theme. The pro extends to 80 elements such as flip boxes and countdown timers. I’ve used many other builders including Beaver Builder, Divi, Site Origin, and WPBakery. Elementor far exceeds all of these IMHO.
If you are really doing this web design thing full time I recommend investing in the pro version to really WOW your clients. See the comparison list of Pro vs Free here.