By simply using a meat thermometer and adding savory seasonings (like soy sauce or smoked paprika) to mimic the meaty depth of beef, or using techniques like velveting for chicken or dry brining for pork, you can get the same satisfaction for a fraction of the cost and environmental impact.
Even switching to chicken and pork for just two meals a week can save you hundreds of dollars.
Lastly, focusing on lean cuts of pork and chicken also has health benefits. While beef is a powerhouse for iron and B12, it is often high in calories and saturated fat. Chicken breast and pork loin are significantly leaner. Pork tenderloin is as lean as skinless chicken breast and has been certified as "heart-healthy" by the American Heart Association.
Tl;dr chicken breast and pork loin are roughly 80% cheaper per pound than beef, have versatile and delicious flavor profiles if cooked and prepped correctly, are rich in protein, and are healthier for your heart and cholesterol.