Cant change the color of table of content title text

The red color is how your theme styles a wide variety of links. It’s the theme’s primary link color setting. If you change that in your theme’s settings (if possible) it’ll affect the ToC links. If you cannot determine where this setting is, ask through your theme’s dedicated support channel for guidance.

If you prefer to override the color through custom CSS, add this to the Additional CSS section of the customizer or style book:

.content-area a:not(.bloglo-btn, .wp-block-button__link, .page-numbers) {
   color: white;
}

You may change “white” to any valid CSS color you like. You can also use hexcode colors such as #ffbbdd

CSS code is often aggressively cached. You may need to flush any caches both client side and serve side before any effect can be seen due to a recent change.