You can try talking to somoene else meet new people or you can just never give up on her it's you're life you're choice to make it a good story good luck
Focus on yourself and try to accept the fact that we cannot make the other person feel the same way and this shouldn’t affect me professional and personal level.
Try remembering the good days you used you have when u had no romantic feelings for her and get your heart to that state where u think her as a friend instead as someone to have someother relationship with.
I have been there really. I know what it feels like. But today after so many years, I don't feel bad at all for not being in that intimate space with my friend.. rather I feel happy that I avoided an emotional episode which would have anyway caused more pain .
So my suggestion to you is focus only on yourself. Your love for them is actually your love for certain things in them. Search for those things In yourself. If not there, try to incorporate those things in yourself. Just love yourself more n more . Be the one that you would love more
Don't force her at all. U are free it love her even if doesn't return it. U can be a good friend and see her happiness.