My macbook pro keep shutting off when it drops to 50 percent then goes back to 90 after 2 mins of charging shutdown code -11

How do I fix my 2019 Intel Macbook pro from shutting off out of a sudden? According to the macbook, my battery life is normal and I only have 110 cycles on it. I have tried a SMC reset and NVRAM as well. When it shuts off I notice that my battery life is always at the same. Usually between 40-50%. But the thing is, my macbook is always fully charged and after 10 mins of use it drops to that percentage then dies. When I turn it back on, with the macbook plugged in this time, it says it has again 40-50% of battery. when I log in, after 2 minutes of charging, its back at 90 percent. I checked the shutdown code in the terminal and it said -11. Google thinks its a hardware failure but I hope it isn't because then I would have to buy a new macbook. this has been going on for 3 months now.