Struggling with no traffic for the past three months on my UK-based website. Seeking advice

I've been running a UK-based website, but for the past three months, I've seen no traffic at all. I'm looking for advice, tips, or strategies to help drive more visitors to my site. I’ve already tried SEO and social media, but nothing seems to be working. Any ideas on what I could be missing or how I can improve my site’s visibility? All suggestions are welcome! Thanks in advance for your help.