I start drive the car has like a lag keeping up with traffic?

Hello,

Poor acceleration can be caused by a clogged fuel filter. So, changing that is a good idea.

https://www.2carpros.com/articles/how-to-change-a-fuel-filter

However, what you are describing sounds like the timing belt might have gotten worn and skipped a tooth. Which is making it difficult to accelerate. I have seen this happen before that a faulty timing belt can impact acceleration. And typically, it will do that before it breaks.

https://www.2carpros.com/articles/how-a-timing-belt-works

I have attached diagrams for your reference.

Please let me know if you have any questions.
Thank you.