Crawl Mod (1.19.2, 1.18.12) has a useful tweak that allows you to crawl on the ground and move through areas with a height of one block. (Button to activate crawling animation by default).
Based on vanilla animation, the author created a new animation showing the player crawling. Your character will move like a soldier and correctly use his hands and feet when activated. This tweak can be used to speed up your movement through difficult areas, or create your very own house that is protected against big monsters.