The easiest way is to look at your tax bracket. As a single person with no dependents it should be "Steuerklasse 1" (tax bracket 1). That means the Finanzamt (tax authorities) already got the maximum tax amount directly from your paycheck. If you are "Steuerklasse 1" and your only real income is from your normal employment, you are not required to declare taxes at all. The tax authorities already got the maximum they could from you, if you declare your taxes, you would either come out the same or get money back. They are happy to not hear from you and keep the maximum they already got.
You only need to declare taxes if you made money through other means than normal employment (self-employed, company owner, property owner) or if you have a tax bracket other than "Steuerklasse 1", which means you claimed to have to pay less taxes than normal (for example because you have a wife and kids) and then you have to prove your claim.
As a single employee, the tax authorities already robbed you blind and are happy to keep your money and never hear from you again. If you don't want anything back, just do nothing.