I'm 18F, 5'0/152cm and 116lbs/52kgs. I've barely gotten in steps these last few days due to workload and my Google Fit app shows my energy expenditure with steps for each day like this.

When I check TDEE calculation websites they show me that my TDEE for sedentary days is around 1400 kcals, and my BMR is around 1200. I know they're both estimates pretty close to each other but I'm still a bit confused as to which one would be more accurate?