I have never filed taxes before and I am having trouble receiving my w-2 to be able to file backed taxes. Is there any way around this?

I have more then 10 years for work experience but I only remember filling taxes once and I only have used exempt for maybe a year at one of those companies. I only have my most recent w-2 but i want to file back taxes but receiving those old w-2s have been difficult. Is there a way around this so I can catch up and see if there is money out there for me? I want to get back on track with this.