If you are citizen of Estonia, holder of Estonian residency permit or right of residence and alien’s passport, then you are allowed to pass trough Denmark, if it is a part of your journey through Denmark-Sweden-(Finland) to Estonia, that can be documented with tickets. Use border checkpoint in Sæd, Kruså, Frøslev or a port in Rødbyhavn.
Alternative for car travelers is a ferry from Germany to Latvia, Lithuania or Sweden.
Tallink Grupp’s vessel Romantika will depart from Germany, Sassnitz on Wednesday, 18 March at 23.55 local time. The ship will sail to the Port of Riga, Latvia (TICKETS https://www.tallinksilja.com/riga-passenger-terminal) and will arrive in Riga on Thursday, 19 March at 23.55 local time.