So, gonna preface this by saying that there's no magic tool that will make you suddenly great at art. If you want to make art like your influences, you're going to have to learn for a long time, that's okay though.
For beginners my advice is usually to start drawing with ballpoint pens and whatever paper you can get your hands on, and then to experiment with other mediums from there. The reason for this is because using ink forces you to try and work with any mistakes that you may make, or make less of them to begin with, and because you can't erase you keep a record of all of your attempts so you can compare your drawings together and analyze what works and what doesn't about all of them. I recommend a ballpoint pen specifically because they're cheap and easy to find, but more importantly because they kinda function like a permanent pencil, in that the amount of pressure you use influences your your line quality, so you can do soft base-sketches and shading with them, just like you would with a pencil. Using ballpoint pens as your 'base" you can branch out and experiment with other mediums, like charcoal, watercolor, acrylics, and of course, digital.
as for digital software, I recommend a couple of different approaches.
Use a simple, bare-bones software like Autodesk Sketchbook, or Mischief. These sorts of programs are easy to learn, are fairly intuitive, and you can focus on getting used to drawing with a tablet, which, no matter what you use, will feel awkward for the first couple of months of using it.
Use a free software that's easy to get your hands on. @shatterjure already recommended Krita, there's also Medibang/Fire Alpaca, and a couple others if you dig for them. This is probably what you should do for now.
Use an industry standard like Clip Studio Paint, SAI, or, to a much greater extent, anything from Adobe (photoshop/illustrator/indesign). If you're serious about art, like you wanna do this for the rest of your life sorta serious, you may as well learn to use these programs because they're the ones that are the most versatile, and they're used by basically everyone. That said, I don't recommend jumping straight into the deep end, these programs have a lot of features, but when you're just starting off they either won't be useful, or they'll be a distraction from your learning process, also THEY'RE EXPENSIVE. So don't waste your money by buying something that you don't need right away.
Learning art is a long haul sorta thing. You're gonna be spending a couple of years just learning the basics. Any software you use today will be drastically different, or deprecated, in just a few years. It's okay to change up your approach and try different things, and you're going to do that no matter what.
