Seven shots? According to the brochure, "Its armour-piercing warhead can destroy heavily protected MBTs in a single shot."
Tanks with active protection are even better. You hit less than 10% with nlaw. Newest Javelin is a bit better.
That's why light infantry focus on trucks.
A tank will need approximately 300 gallons every eight hours; this will vary depending on mission, terrain, and weather. A single tank takes 10 minutes to refuel. Refueling and rearming of a tank platoon--four tanks--is approximately 30 minutes under ideal conditions.
https://www.globalsecurity.org/military/systems/ground/m1-sp...
See also laager: https://military-history.fandom.com/wiki/Laager