How to sharpen and correcting my front-store logo?

Hello everyone,

I am having trouble with my front-store logo.

As you can see https://stoffefactory.de/ my logo on the very top left corner “stoffe factory” is a little bit unsharp/blurry.

I want to fix it. It is actually just a font that I bought called “Prelia”.

On this website https://cowboy.com/ the logo appears super sharp and just perfect. Any idea how I can adapt my logo just like the one on the cowboy website? I think they worked with vectors but I have no clue how to do it.

Thank you so much in advance.

On this website https://cowboy.com/, they use an SVG logo, so image quality is not affected by image resize resolution.

any idea how I can use an svg file?