Your genetics may determine the internal process making fat storage or muscle gain easier/more difficult - but it doesn't dictate what happens.
The food you put in your mouth, the activity and training you do, the daily habits you put in lace, the effort at which you chase your goals, the recovery protocals you follow and the drugs you take dictate what happens - your genetics only affect the time in which these results occur.
Your genetics aren't preventing you from losing fat - the habits, training , calorie intake, sleep schedule and consistent effort prevents or enables this to happen.
Some people get biltong shredded in a couple of weeks while others take much longer following the same protocols - this is genetic based - however the result is still the same - YOU CAN STILL GET LEAN AF - genetics aren't going to stop that.
There are relatively few people (less than a couple % of the population) in this world that truly know what their limitations are - but they never saw that from assuming after 6 months of training that they are or aren't going to be top tier athletes - they learned that from years and years of hard work and improvement on their structure and protocols to find their peak and true potential.
You can't see your potential at the start line, you have to work relentlessly for years on end to be able to see what your true potential is.