is my engineering degree essentially useless?

i graduated in 2019 with a bachelor’s degree in industrial engineering. it was a degree i really struggled to get. i failed several classes and had to retake them. even then when i passed, i just barely passed some of them. some i actually did well in. it took me six years. i was going through some major life events at the time and my mental health was so so poor. after graduating i wasn’t super dedicated to the job search as i was preoccupied with life. i was in an abusive relationship and got pregnant. i left my son’s father and i’m a ingle mom. i have an okay full time job. enough to make ends meet but i want more for us. i’ve applied for probably around 150 engineering jobs since graduating and i have never got an interview. i just don’t apply anymore. don’t even consider it an option. plus it’s been so long since graduating i don’t even know if i’m sharp enough to do a job well. is this degree useless?

Edit: thank you so much for all of the advice. i really appreciate those of you who took the time to comment! just wanted to add that when i said i’ve applied for 150 jobs that was me explaining how little i have tried lol. i know that’s not a lot. sounds like my degree is not totally worthless. i’m gonna take some of the advice i’ve read here and keep on trying!! again, thank you guys!!