Social Media Accounts Identity Designs

Hi there guys!

Wondering is there is a resource or site from where I can access many different templates to build and design graphic elements such as logo, header/cover image, etc from different social media platforms like Facebook, Twitter, etc?

I know theres Canva and as amazing as it is I am wondering if there are other alternatives or how you guys do it?

I am looking for free options only.

I know my way around Illustrator and know the basics of Photoshop is this helps your feedback.

Cheers!