Can therapists be wrong?

TW mention of suic1de, has someone had a therapist make them worse?

3 years ago I went thru an extremely hard and traumatic loss, I lost someone very close to me to suic1de, it was right before lockdown which made everything so much worse. I had never had anxiety or depression before but obviously those months I was extremely sad. Eventually with family and friends “got over it” and life started being great again, met my boyfriend who is amazing and life has been good for more than 2 years. Until I suddenly developed anxiety for the first time 2 months ago, this slowly turned into feeling depressed. Speaking to my therapist about it telling her how hard and traumatic it was and how I’m so scared of depression as I link that to suicide because of the person i lost to it she says to me I have always been depressed and the reason i even got close to that person in that first place was because she was my mirror because I was always a sad girl. Which feels so horrible and unfair to hear as I thought I was always someone happy that just went through a traumatic loss. And now she says to me I’ve always been depressed ? It really isn’t helping and I know I have always been happy so I just don’t understand why she would say that but because she’s a licensed therapist I’ve convinced myself it could be true but it just doesn’t make sense. Anyone have any insights on this? Can therapists be wrong? I had never been depressed before and I refuse to believe I was always a “sad girl” and thats why i dated someone who eventually died of that. So now I struggle with thinking I have always had depression and on top of that I have trauma that I need to heal