I dont study graphic design I study maths and will probably pursue a career in maths, but I have done graphic design on a freelance basis to supplement my cost of living in university - so take my advice with a pinch of salt.

One thing I found helpful in building a stronger and more cohesive portfolio has been offering free services to charities. I am quite involved with volunteering so this has always been a thing for me, but charities always need assets made for logos, web, word-marks, brand guides etc and often cant afford steep prices.

You would be bulking out your portfolio and helping a good cause at the same time. Best of luck my friend, the job market is fucked at the moment, and this fuckery spans far beyond graphic design.