When trying to understand time, our head creates a loop of observation of the process of being, carefully attentive to the moment past, present, and the immediate future. This makes a flow of perception that locally moves you into thoughts like:
when will this moment pass? what's going to happen next?
in anticipation and remembering

However, at the same time, your heart keeps on beating, and its rythm ties to the world, a constant bom bom bom, that is the real way time exists

I learnt this from Carlo Rovelli and Momo

Keep on thinking!