You have to understand that when they say chances of separation is there, it means that there will be an extra effort required from both sides to keep the relationship moving. Yes your horoscope per say is weak on the marriage front. But you can always get the desired results by working towards it. No need to take tension and stress.
Marriage can get delayed as Ketu is presently in the 7th house in your transit chart. Marriage possibility is there towards end of 2022.
Blessings,
Navneet Khanna
Astrologer