1- Try to focus on your relationship with Allah without thinking about other people. Imagine you have left this life and you’re on your own with God. Suddenly you’ll realize that people don’t matter. This helps with arrogance. Another strategy is think of this scenario: imagine if you were told that you have 6 months to live. How would that change arrogance you are finding in your heart? Realize that one day we will have to leave.
2- We all struggle with arrogance. It’s one of our greatest trials. We must constantly put our arrogance in check by realizing that we are nothing without God. And that Allah created me just like He created others.
I recommend you see the following:
3- Recite this Dua from Dua Kumayl constantly:
واجعلني في جميع الاحوال متواضعا