Practice with every interaction you can, watch YouTube clips on how to order coffee in German and go get yourself one, then go from there. I learned A1 last year and spent a month in Germany over Christmas and it was like a game to get through a conversation without tripping up.

learn these phrases , repeating the phrases out loud is the quickest way to memorise it.

Most younger Germans speak English as it is taught in school. In day to day transactions they will switch to English if they sense that it you are English speaking. That is the game, if you get through the transaction without English being used (by either person) then you win, if you have to use English or if they switch then you lose.