How to put post title or keyphrase in content on different places automatically?

You can search-replace those placeholders with the_content filter.

function custom_the_content( $content ) {
    return str_replace('{placeholder}', get_the_title(), $content);
}
add_filter('the_content', 'custom_the_content');

Note: I don’t recommend using *** or similar as a placeholder, as it can be commonly used. That is why I’ve used {placeholder}.

UPDATE: Based on the comments below, if you need to search-replace multiple values within the_content filter, use arrays as str_replace arguments like below:

function custom_the_content( $content ) {

    // Search for these elements
    $search = array(
        '{apktitle}',
        '{apkversion}',
    );

    // And replace them with these (the order of array items is preserved)
    $replace = array(
        get_the_title(),
        get_datos_info('version'),
    );

    return str_replace( $search, $replace, $content );
}
add_filter('the_content', 'custom_the_content');