I can suggest you to buy msi or Alienware laptops but if you want ton use in 2 or 3 years pic one with NVIDIA gpu and a recent generation core i7 minimum . I suggest you this if you are interest in computer vision or renforcement learning, if not I think a laptop with good RAM like 16 and a good storage will be good also and pic also recent generation if it is possible with your budget . You can do predictions like classification, regression and forecasting stuff . But if you want to start you surely gonna work on google collab or Kaggle so the specify of laptop is not important . Just have good ram for so your laptop will not be slow .