having a good online presence is important to any business. Though having an organic way to do that can be difficult. So the best way to add keywords to your site is by having a blog or a place where you can post regularly. This doesn't mean you can just post a bunch of keywords that you want to rank for in a long string on a daily basis. You'll get ranked lower or even Shadow banned. Find topics that interest your clients and expand upon them. This way you can get your keywords out there help people learn about your business and what you can offer potential clients. I know that I can be a pain to keep up with writing a full written piece daily, but keeping it frequent enough that your audience can keep your posts in mind in a timeframe that works best for you will be one of the best things you can do for your business.