Yes, you are a strong Manglik which only means that you are sexually very stimulant and there is nothing to be afraid of.

For a Cancer ascendant native, Mars placed in the 7th house in Capricorn does technically form manglik dosha, as Mars is in one of the key houses (7th) considered for this condition. However, in your case, the situation is significantly modified and largely neutralized due to two powerful factors.

First, Mars is exalted in Capricorn, which gives it strength, discipline, and constructive expression. Second, for Cancer lagna, Mars is a yogakaraka planet (lord of the 5th and 10th houses), making it highly auspicious. When a yogakaraka planet is strong and well-placed, it tends to give positive results rather than harmful ones, even if it forms a dosha.

In the context of marriage and relationships, this placement can make the native assertive, passionate, and action-oriented. There may be a dominant or leadership tendency in partnerships, and the native may prefer a strong, capable partner. At times, this can lead to ego clashes or power struggles if not handled with maturity.

However, instead of causing typical Manglik problems like severe marital discord or separation, this Mars is more likely to bring dynamic energy into relationships, along with ambition and mutual growth. The native may attract a partner who is practical, career-focused, or disciplined.

Overall, while Manglik Dosha is technically present, it is largely cancelled due to exaltation and yogakaraka status, and Mars is more likely to give strength and stability rather than harm in marital life.