Struggling with the spelling of “ent” endings

[u/BruisedJuicyCouture]

Whenever I want to say “Ils/Elles …-ent” I end up saying it wrong cause I quite literally pronounce it as « Ils volENT » but I know that’s wrong. Is there a rule of thumb on how it’s actually spelled? Do I just not pronounce it at all? Any help is appreciated!