Hi, Mohammad. You can availability a free blogger template template.
Most of the templates available out there have a medium quality to the requirements of Google for ranking.
Usually have loading errors, many scripts that Google blocks and when we see WP platform templates are good quality.
However, I like the ease of Blogger and the credibility for being of Google.
I believe you with all your knowledge can provide a good template for your entire community.
What do you think?