WooCommerce Remove Extra Zero In 3 Decimal

I'm using 3 decimals so my price's seen as:
"$20.000" , "$20.050" , "$20.055"

I have search about removing zero decimals, and found this one:

    add_filter( 'woocommerce_price_trim_zeros', 'wc_hide_trailing_zeros', 10, 1 );
function wc_hide_trailing_zeros( $trim ) {
    // set to false to show trailing zeros
    return true;
}

However, it is not working properly. Because It is only removing .000 decimals. ($20.000 to $20)
In addition, I want to just remove an extra 0 decimal from the last decimal segment.

For example; "$20.000" to "$20.00"
"$20.050" to "$20.05"
"$20.055" will not change

Your above filter (which returns true) triggers the execution of wc_trim_zeros() function, which indeed removes zeros only if the price has only 0 decimals.

What you need is to use the formatted_woocommerce_price hook instead.

The below filter will cut all trailing zeroes:

add_filter('formatted_woocommerce_price', function($formatted_price, $price, $decimals, $decimal_separator) {
    // Need to trim 0s only if we have the decimal separator present.
    if (strpos($formatted_price, $decimal_separator) !== false) {
        $formatted_price = rtrim($formatted_price, '0');
        // After trimming trailing 0s, it may happen that the decimal separator will remain there trailing... just get rid of it, if it's the case.
        $formatted_price = rtrim($formatted_price, $decimal_separator);
    }
    return $formatted_price;
}, 10, 4);

UPDATE: the below code will only cut a trailing zero if it's the 3rd and last decimal:

add_filter('formatted_woocommerce_price', function($formatted_price, $price, $decimals, $decimal_separator) {
    // Need to trim 0s only if we have the decimal separator present.
    if (strpos($formatted_price, $decimal_separator) !== false) {
        $formatted_price = preg_replace('/^(\d+' . preg_quote($decimal_separator, '/' ) . '\d{2})0$/', "$1", $formatted_price);
    }
    return $formatted_price;
}, 10, 4);

Disclaimer: code not tried out, written directly in the answer box.