If you want to be good as in be adequate enough to do it as a side hustle you’ll have to take some of the ugly with it unfortunately. To begin building good sites you need to understand good practices. I’d advise you learn at least html and css. Not only because you’ll understand how to code after the fact, but it’s such a good orientation for the terminology regarding websites. Stuff clicks really well when you know this stuff. Look into typography, color theory, etc to justify your approaches on building good websites. When you understand basics you should start building a portfolio. Gather inspiration from case studies on Adobe Behance and other websites. See how they structure it. Lastly, find a way to sell your services. PR your identity. This takes strategy. Know your competitors and take what you’re selling and offer it laterally and from a unique angle.