There is no denying that your horoscope is weak on the marriage front. Mars rules the 7th house of marriage. Mars is in the 9th house with Rahu which is never considered good. Mars is also combust as it is close to the Sun. Ketu aspects the 7th house. Therefore your 7th house and its lord are weak. However Mars is exalted in D9 chart and Venus is in gains, therefore I do see a possibility of remarriage. The possibility is very much after June 2021. Do not keep your expectation high as your chart is weak.