the class in the a should be href!  that will happen if you used the coding for the discord icon bit haha

when you do that, there is no need for the title as well, but if you still want it to pop up, add class="tooltipster"

<a href="https://www.decolonizepalestine.com/" style="color:#aaaaaa;" class="tooltipster" title="Decolonize Palestine">
     <i class="fa-solid fa-circle-info fa-2x"></i>
</a>