Jesus is talking to a group of people about what they as individuals should and should not do. All occurrences of "you" and "your" in verses 5 and 7 are plural; in verse 6 they are singular, but in some languages they may need to be plural. (See: [[rc://en/ta/man/jit/figs-you]])
Possible meanings are 1) no one can see God. Alternate translation: "Father, who is invisible" or 2) God is in that private place with the praying person. Alternate translation: "Father, who is with you in private"