To give Fauchi his due - he said what he could and I have no fault with what he has stated through time as I understand that he did as much as was possible in the circumstances and there was nothing that was in any way ever truly false.
What Fauci said in the early going about masks was intended for them to be available to those that needed them most - doctors and nurses. And he said so. Later, when masks became plentiful, he rec'ed them for everyone. He didn't lie about anything.
On the other hand, trump lied flagrantly, saying the pandemic was no big deal, how the "15 cases will soon be down to zero", how it would fade in warmer weather as if he was some kind of expert, and blowing off the wearing of masks, which his pathetic slobbering followers took to heart to this day. He cost many lives, and his followers ignore it all, critiquing expert opinion, worshipping an idiot.