Just freeze the part that you dont plan to immediately eat. Im also a german enjoyer of fresh and/or homemade bread and thats what ive been doing for years. Buy bread/brötchen and directly chuck it in the freezer. When you need some, it will thaw in like 1-2h if you just leave it in a paper bag. The consistency and crunchyness will be perfectly preserved in my experience. If you need it fast then a microwave and/or toaster can help, but the microwave can make it mushy if you leave it too long.