any suggestion will be very helpful for me
Studying and practicing… There is no other way 
Maybe some programming… javascript and PHP
I assume you are referring to C777 from WGU?
If so, I would rely heavily on any course materials they provided for study. I understand that there is a study guide and a practice assessment available.
In addition, I would go through these free W3Schools exercises until I was super comfortable, even bored doing them:
HTML Exercises
CSS Exercises
JavaScript Exercises
When you look for Practice Questions, there are some available on Udemy, but I can’t vouch for them. You will also find endless Brain Dumps mentioned by shills, and sadly, even Google AI.
The issue with Brain Dumps is that they are real test questions that are poorly QAed and often have incorrect answers. All the Brain Dump providers sell the same list of questions, and none are any better than the other.
Here’s my view on dumps: if you absolutely insist on buying one, buy it at the very very end of your study to see how well your study has prepared you to pass the test. Ideally, have your wife or parent purchase it, or purchase it using a hard-to-trace identity. It’s rare, but these sites are occasionally shut down, and one way to avoid deeper legal trouble is to give up their user lists. If you are caught using a Brain Dump, you will likely be kicked out of the study program and/or expelled. Additionally, you will never be permitted to obtain the certification in the future.