is it too late for me to find a partner now? i'm done for?

i'm in my 40s and unfortunately missed out on finding any relationships with girls because of a hard life, social problems & mental problems, but what i still hope for is to find myself a partner, a female.....but i live alone, are shy reserved and quiet, i suffer low self esteem i admit it, because of all i have been through....at my age of 43 can i still find a partner or am i screwed?


i live a lonely existence, with my only support my elderly parents.