Question: "I am not writing a Will because I am having difficulty in finding legal guardian for my kids.”
Answer:
The legal guardian of your children is always the surviving biological parent. In this case will be your spouse (assuming he or she is the biological parent). The only issue is if two parents dies, than the guardian will be depend on the authority to appoint or if you have appointed this guardian in your Will - that guardian will be in accordance to your wishes.
If you do not know who to appoint as guardian you can just leave out the guardian part in the Will. Appointment of guardian is not compulsory. You are no worst off as compared to current situation if you leave out the guardian appointment in the Will. In the event you found your guardian ...