There are many resources and tools you can use to make your marketing efforts more efficient and effective. I will list only a few free options to get you started. You can learn more and get more in-depth ideas and tools here.
Canva is a great tool with a massive range of templates you can use. Everything from a social media post to a recorded presentation. They have free and pay-to-use elements. Some of their features require a subscription/payment but it is a great tool to have in your marketing belt.
Sprout Social is a great resource to gather insights and information from a wide-range of data. Information on demos, trends, strategies, including case studies and webinars ,and more.
Filmora is a great program if you are new to video editing and want to learn how to edit your own video marketing content. You can download Filmora for free and start editing today. They also have a Youtube channel to show you how to execute different effects. There is also the Filmora Creator Academy channel. Filmora also offer royalty free photos, videos, music, and sound effects.
A good resource for royalty free photos is Unsplash and for photos and videos, there is Pixabay. I mainly will use Pixabay when needed and you can buy creators coffees and general payment in form of donation if you choose.
A fun photo editing tool is BeFunky. Check it out and play around with it.