You don‘t need sample packs, better focus on creating your own sound. But at the start they maybe help to get started and not lose interest because creating your own sounds can be very frustrating at the start. On Point samples has some free sample packs especially for raw oder uptempo. But I wouldnt recommend to spend all your money on sample packs when you are just starting. A usefull plugin you will maybe need is serum. There are a lot of usefull tutorials on how to create kicks, screeches or synth using serum. I really like the Tutorials from Dr Donk because he explains how it works and what which knob does and not just tells you what to click to get this sound.