The warring factions have clamped down on the freedom of both Sudanese and international news outlets. If you are a journalist in Sudan, you have a target on your back and your family may also come under attack. International journalists are denied entry into the country. Add to that the unreliability of electricity, internet and telecoms and reporting is almost impossible. Also, this is a complex conflict that doesn't lend itself to a simple narrative. There are no clear good guys or bad guys.
If there were no other more pressing conflicts, Sudan may get more coverage despite these issues. However, Gaza and Ukraine are both live conflicts (although hopefully Gaza is coming to an end) that are closer to home and easier to report and understand, so they take attention away from Sudan.