@ Dhwani,
Mere debilitation of Sun in the Rasi chart should not always be a cause of worry. The debilitated Sun occupies a Rasi of Venus who is also in debilitation. But even Venus is placed well in the Navamsa. And Venus provides a cancellation to the debilitation of Sun. The Sun is aspected by a debilitated Saturn. Saturn also gets its cancellation of debilitation from Mars. Sun is in the nakshatra of Jupiter. He is Vargottama but retrograde.
Overall, Sun alone can’t be blamed for your state. After all, Sun’s dasa is near the end of your life. So is that of its dispositor Venus. That of its Star lord Jupiter is also far away.
But there are other problems to be taken care of. The afflicted Lagna is something that can’t be changed. Moon in the 8th in the company of Ketu in the Rasi chart constitutes Grahana yoga which can distort your mental perceptions.Both Moon and Jupiter are Lords of Dagdha (burnt) Rasis in your chart. Additionally Moon in the 8th is in its Marana Karaka Sthana.
Similarly, Mars is also in his Marana Karaka Sthana. He also induces a Manglik dosha.
A shanti for Moon and Ketu and wearing of Yellow Sapphire is suggested.