Unhappy but can't leave

I feel like I cant give my child the best life by myself, I'm unhappy and my partner has left me feeling heart broken so many times 😓😥

I just don't want to raise my little one wrong or without a male remodel/figure to look up too ....

What can I do ? 😓

Update: his good with the child tho and they are never without a smile when together. I'm torn up by needing to choose 😪