How to write a message that can't be mourned?

First, I said I couldn't be there in person, and then I expressed my condolences to the deceased. When replying to the news that you can't go to mourn, you can first express that you can't be there in person, and then gently express your condolences to the deceased, so that you won't violate others verbally. For example, it's a pity that I can't mourn in person, but I will pray silently in my heart to mourn the lost life.