Fluoride insertion into LaSrMnO4 alters the oxidation state of the manganese ions, reducing the average Mn-O bond lengths in all directions. The oxidation of Mn 3+ to Mn 4+ effectively suppresses the Jahn-Teller distortion, leading to shorter and more uniform bond lengths. In the fluorinated phase LaSrMnO4F1, the variability in bond lengths can be attributed to two primary factors. First, the disordered arrangement of La and Sr ions continues to affect the local environment of the Mn-O bonds. Second, the structural difference between the two apical oxygen atoms introduces further complexity. Specifically, one apical oxide ion is adjacent to a fluoride ion layer, while the other is next to an empty fluoride layer. This difference results in distinct bond lengths for the two apical oxygen atoms.