We hired a guy who had been out of software for a decade. It was a risk to do so, because what if he can't do it anymore? What if he's so rusty that he's worthless? So we hired him to a three-month trial period, at a reduced salary. If he worked out, we would keep him and give him a substantial raise; if he didn't, well, it cost us three months of reduced salary, so the risk wasn't all that high. He worked out, and we kept him.

I think that structuring things like that might help if companies are reluctant to hire you because of rust.

As for leet code: There's plenty of places that don't interview that way. I couldn't pass one, either, and I've been coding professionally for 35 years. Don't worry about those kinds of questions. If you're and angular programmer, leet code isn't really what your job is, and therefore it really isn't what interviewers should be asking. If they are, that's their problem, not yours. Go somewhere else.