Hi muhammad haikal,
Thank you for reaching out to us.
We noticed that you intended to set the pager template
within the pager, but it currently displays the default pager dropdown. We have
successfully created a sample that is based on your requirements.
Please refer to the below sample, code snippet and
documentation for more information.
Screenshot :

Sample
: 9gtrsn
(forked) - StackBlitz
Documentation : Paging
in React Grid component | Syncfusion
Please get back to us, if you need further assistance
Regards,
Johnson Soundararajan S