Please share your experienced
I will share my experience.
Isn’t that your task of digging that out? how can you expect someone will do your stuff instead of you? If you’re serving anything related to web design and development you can simply do competitor keyword research related to your service (Google should be something that you can use). you will get tons of keywords related to web design services. get a spreadsheet and put those unique keywords and sort out the trending keywords out of those.