As others have mentioned, there are lots of protein sources that are not pork. Personally, I don’t eat pork… or shrimp or catfish or rabbit or any of the meats that would be Biblically “unclean” (no offense intended, just not sure how else to describe). That leaves many kinds of fish, poultry, beef and numerous others. There are options. For me, that also allows eggs, which are considered to be a very high quality food among many.
As for dairy, I do use some but maybe not as much as most. It tends to be a condiment or ingredient here more than a stand-alone food group. I like cheese but don’t usually just sit down and eat cheese. More likely, it’s in something or on something to alter the texture or flavor. I don’t drink milk at all. Heavy whipping cream is used in my morning coffee and occasionally for part of a soup base or baking ingredient. Butter is also a condiment, not a food group but I don’t avoid it.
If you don’t want to use dairy, you might find coconut oil to be to your liking in place of butter in many situations, cooking and ingredients. You might find nutritional yeast flakes an interesting addition to some things to add a bit of flavor. Some will use variations of nut butters in different ways to try to enhance the flavors or textures of some things.
There are a lot of foods that are keto friendly even when avoiding pork and dairy. You just have to figure out what works for you, bot in flavor and in nutrition.
Good luck!