No. The prerequisite for the deduction of donations is their proof in the form of a donation receipt (donation receipt) issued by the recipient of the donation (e.g. association) in accordance with the officially prescribed form. For donations up to € 200 or € 300 (as of 01.01.2020), your bank statement will suffice as proof. Without proof, a donation cannot be taken into account.
Note
Further information can also be found in the"Tax tips for non-profit associations".