@VitallikOki Hey! I'm so excited that you're wanting to write! I really recommend checking out the podcast Writing Excuses hosted by Brandon Sanderson and others. It's short, super helpful, and packed with good advice. His website also has great stuff for new writers too.
A lot of writing advice really comes down to practice. Nobody dies from a poorly written story, so give yourself the freedom to experiment and try things. One thing I like to do is write a scene between characters, then rewrite it from another character’s perspective. It’s a fun way to see how the same moment can feel completely different.
For planning, one-shots are great to practice endings and tying story elements together. If you’re working on something longer, try looking into story structure. The 3-act structure is a good starting point, it helps you figure out where your big moments should go. Also, check out Ellipsus, it’s a free writing app with templates that can really help with planning.
And if you use Discord, come hang out at Otaku Ink! We share writing advice, prompts, and feedback there.
https://discord.gg/dG6GjSSK9
Have fun writing! The best way to get better is just to keep doing it.