More training doesn’t equal more fat loss.
Lots of training doesn’t guarantee any fat loss whatsoever.
If you train frequently and are unable to lose weight the issue isn’t training.
The issue is your calorie intake is too high.
Increasing your exercise does ensure you burn more calories, this allows you to eat more and still lose weight, but only if your calorie deficit is achieved.
If your fat loss is a long-term goal I suggest planning your weekly exercise to be at level you can sustain.
Also choose exercise you enjoy.
Exercising more does have its advantages but these only come into play if it doesn’t inhibit your ability to stick to correct calories.
My suggestion would be for most people that 3-4 resistance sessions is plenty, with the addition of cardio if time allows.
Keep active to boost expenditure and primarily focus on calorie intake.