We are dealing with three issues here:
1) Age: 30 yrs
2) Infertility of more than an year
3) Endometriosis
Endometriosis condition is known to affect the quantity as well as the quality of eggs.
Next Steps
If your ovarian reserve is good, you merit around 3-4 cycles of IUI.
Health Tips
Since you have undergone a surgery for endometriotic cyst, check your
AMH levels. If your AMH level is not optimal or if you fail to conceive in 3-4 cycles of IUI, opt for IVF without much delay.