@ Rupa,
There are two problems in your chart. The first issue is the presence of Shrapit Yoga formed by Rahu and Saturn. The second is that a Dagdha (burnt) lord of a Dagdha rasi (Kanya and Mithuna are burnt rasis in your chart and Mercury is the lord) occupies your 7th bhava along with a separative Sun (They are 8th in the rasi chart but are in the 7th in the bhava chart).
Another issue is the presence of Moon without support on either side. This gives you a tendency to be aloof and connect less with other people. However, because Moon itself is in a Kendra and there are planets in a Kendra from Moon, these effects may be a little suppressed.
In your Navamsa chart, Lagna occupies the 8th from Natal lagna and is aspected by Mars. The 4th from Navamsa Lagna is occupied by Mercury again.
All these make marriage a difficult proposition in your case. The remedy suggested is Jalabhisheka to Lord Shiva on Mondays with a prayer for relief from these ill effects.
Second marriage is possible after October 2026 if the remedial action has been taken.