How to do digital marketing effectively?

There are 6B+ smartphone users in the world, and 57.14% of smartphone users are using the internet on their smartphones, leaving aside laptops, desktops, and other digital devices users based with internet access.

World Advertising Research Center says that by 2025, 72.6% of total internet users will be on smartphones. Digital marketing allows sellers to reach their target audiences with access to the internet on their digital devices.

I believe if anyone can keep these 4 things in the most simple way and do them consistently, they will be able to increase their outcome.

These are basic but very important things, things that have huge impact on your outcomes.