Hi,
You are Manglik (have Kuja Dosha) alright. There is no denying the fact. In my humble opinion, Mars/Kuja being placed in his Neecha-Sthana or sign of debilitation makes little difference (you see, when triggered the temper or anger of a weak person is a lot more destructive than a healthy or strong person).
That said, you’ve experienced lifetime events… gotten married, have progeny, experienced good and not so good. I’m sure the life events have given you an opportunity to reflect and learn from past experiences. Further, you are now 47 years of age… with age comes some maturity. And, in my humble opinion age and lifetime experiences will tone down the effects of Mars/Kuja. But that should not matter now…
What matters is you’ve started Maha-Dasha of Saturn/Shani-dev since 2017. He ruled over the 2nd house and is placed in the 9th house of Bhagya-Sthana. Incidentally, this Saturn/Shani-dev has below par Vimsopaka Bala in Dasha Varga. His depositor Sun/Ravi also has below par Vimsopaka Bala in Dasha Varga and is placed in the Roga-Sthana. So, it would perhaps make sense for you to be cautious and take good care of your health… more so in the current Antara of Rogakaraka Venus/Shukra, followed by that of Sun/Ravi.
On the marriage front, I’d suggest you not worry about Mangal / Mangalik Dosha. That would be the least of any suitor’s concern. But then, I’d be a bit skeptical of the time period being conducive.
Take care…