Well, you certainly weren't wrong when you described your goal. But 12 calendar/5 workout days? You never even gave it a chance. Especially when, on 8-18-2021, just over a week later, you mention that losing weight is your priority, not the NLP.
At 30, you still have the opportunity to enjoy being a young lifter and enjoying the gains achieved while being a young lifter. But that window is closing faster than you realize. You can use your 150kg body weight to your advantage if you actually follow the program as written. But the path to that is, in your situation, not to chase an overly restrictive diet or an arbitrary number on the scale. Keep track of your diet, making sure to not eat a surplus, perhaps cleaning it up in places, but don't go restrictive. Reset your weights and run your NLP as prescribed. Your lifts will go up significantly and while your scale won't budge too much, your clothes will fit significantly differently. Then you might notice that scale number starting to go down, but it won't be muscle that you are losing.
Here's a good article describing what you're facing, just in case you haven't run across it — Starting Strength for the Obese Trainee. And Rip has written more about your situation in A Clarification with some guidance on how to make that body composition shift a bit easier.
Best of all, Robert Santana is quite active over in the nutrition forum. He has helped many lifters in your similar situation and will no doubt be happy to guide you through this. But you'll have to be willing to actually do the program.
Good luck, Marcelo!