for...of gives you the values of an array. for...in gives you the keys of an object, as strings. Mix them up and you get indexes instead of items, or worse.
Trace a const reassignment inside an input handler, preserve the original list, and verify that filtering and clearing the query both work.
Backticks and ${} replace most string gluing with +. You get readable text, values inside it, and multi-line strings without \n everywhere.
"5" + 1 is "51" because + joins text before it adds numbers. Convert values on purpose with Number(), String() and parseInt(), check for NaN, and stop letting JavaScript guess for you.
Your date moves a day because one part of the code uses UTC and another uses local time. Find which step does it, keep calendar days as YYYY-MM-DD strings, and name the time zone when you format.
Replace long lists of positional arguments with one options object, destructured in the parameter list with defaults. Add = {} so a call with no argument doesn't crash, and know that defaults only replace undefined.