Also, leave the booze for special occasions -- no drinking a "nightcap". It makes you feel similar to being tired, but it really lowers the quality of sleep. It seems to interfere with REM particularly, which is really important for actually feeling rested when you wake up.
From what I've read, a single drink is usually good for sleep, 2 or 3 is too much and will do more harm than good. Wikipedia currently agrees with me, but the reference is from 1980, so not sure that's the best available information these days...
If the watch tells you you’re sleeping bad do you think it makes you feel worse physically? There should be an app that measures your physical reaction to checking the sleep quality app.