Hi, I would do a short market sounding with comprehensive effort, eg. via https://www.producthunt.com and searching for your specific requirements. After having selected a short list, you can then see the reviews on www.g2.com - they have a quite comprehensive coverage of software tools. Selection criteria do very much depend on your willingness to employ your own labor into it and how individualized you want to promote your brand. Indeed (as someone in the previous answers already stated), canva.com provides you really very helpful templates, where you can gain an idea, how you want to do your branding.
Another option would be to entirely outtask this activity by searching for professionals on upwork.com or fiverr.com
If I can provide further information or you need a consultation, please let me know. I am happy, to help.