I think that high-quality design is very important for attracting visitors and SEO promotion. It seems to me that making a good design yourself is very difficult, therefore it requires certain skills and knowledge of programs. If you want responsive design, then I recommend that you turn to professionals. I can recommend you
FuseLab Creative. They really follow design trends, but they create a unique design. You can see more information on their website. They have a good reputation in this area.