My first language, I spent months on the parser and then gave up. As I learned more I got better until now, I can write a hand-rolled parser for a simple langua

My first language, I spent months on the parser and then gave up. As I learned more I got better until now, I can write a hand-rolled parser for a simple language in under a day. There's a technique to making syntax which is easy to read/write and easy to parse with a look-ahead parser. For more complicated languages, there are tools like tree-sitter and ANTLR4. You can even extend an existing tree-sitter grammar to augment a language without having to re-write the base language parser.