Cheated on after miscarriage

Me and my boyfriend of 6 years as of last month share 1 beautiful living child. I had 2 miscarriages in 2020 one at 19 weeks and one at 10 weeks. I became pregnant again and lost our baby last month.. about two weeks later I found out that he's been cheating on me with different women. I have sacrificed literally everything for him over the years, and I've tried my best to make him happy. I am only in my early 20s and feel like my life is over. I have no friends at all.. I just feel so alone. I broke up with him amd have had no contact with him since besides about our child. but I just feel so depressed and empty inside. Words of encouragement please? I'm trying my best to keep a smile everyday for our child but I'm suffering.