is hitting a protein goal necessary in a calorie deficit?

hey yall, been struggling to fit a decent enough amount of protein in my calorie deficit at the moment (just not been eating enough protein rich foods really) and am just wondering how necessary it is to achieve the 1g=1kg (or similar) recommendation a day?

i do understand that maintaining a certain standard of protein will prevent muscle mass loss, but does it do anything else other than this? does it prevent cravings, satiation etc to a considerable degree? im not sure how much i need to be focusing on protein. are items like protein bars, protein enhanced foods actually beneficial in the process?

im not the best at the maintenance of this right now but depending on how necessary or beneficial it is ill be looking into redoing my meal plans to account for it.