Opportunities occur when people discover a problem of some kind that can be solved with the provision of product/services, or when people decide they have certain needs or want to satisfy.
Opportunities may also arise from change. Sources of opportunities could also be an observed demand and supply gap arising from society's needs and function, growing and evolving economies and economic niches, technological change, social change, demographic change, political changes such as war, tariff and embargoes or artificial scarcities.
Read more: https://www.entrepreneurshipsecret.com/the-role-of-swot-analysis-in-identifying-business-opportunities/