Finding out that Google AdWord works depend upon your business and which country you want to target, as google adword has a policy for different countries. Before doing a google adword campaign in India or outside of India you have to read google ad policy as this will help you for your business as well as unwanted cost.
For instance, you want to run campaign in the medical field then you need to follow google ads policy for India or other countries else google would not approve your ads that means you are wasting your time. To do the proper thing, always follow google guidelines which relative to your business.
Google AdWord gives genuine leads or sales for your business. You can grow your business through google ads and target your potential customers at very less time.
To get the best for your business from google ads, I would suggest you always hire Google Adword Specialist as he has good knowledge and provides you leads at a very low amount. If you run google ads without knowledge you may lose your money due to lack of knowledge as well as experience.
Google AdWord is used by small businesses as well as the largest businesses and they earn good ROI for their businesses.
The main setback of google ad is if you invest money in google ads then you are getting business or your ads will be showing but when your amount finish then your ads will not be shown by the google.
I would recommend to you, do not depend too much on google ads as we should use other digital marketing channels for their business. We can use Email Marketing, Social Media Marketing, SEO, Influencer marketing, and many more. These channels also help to get business for your business.