You can sell Saas or create opportunities in other niches. Web-dev with clients seems like a headache. You'll be catering to their desire for the latest trends

You can sell Saas or create opportunities in other niches. Web-dev with clients seems like a headache. You'll be catering to their desire for the latest trends and buzzwords, returning you to some of your dislikes. As to minimalism, page speed is a ranking factor. Concerning introversion, challenging yourself with sales will help you out of that. Once you understand this process you might better appreciate the opportunities available. If you're looking for change, challenge yourself.