Now a days startup ideas that revolve around users problem are the most popular ones.
take Uber for example they had a simple idea but since it solved people’s problem it became famous. Also you don’t necessarily have to launch a global business start small try to come up with solution that will help the local and then you can make it big if you want
for ideas i have to say now launching a business is easier then ever there are so many options now you can start a salon and allow people to book your services from apps, you can also start a logistics business or taxi service etc
you can also get ideas for your business through this website