Do you mind linking your resume (Anonymize it beforehand if you wish)? 1 interview for 10 applications is low but not unheard of, but if you get cut for those because they somehow never noticed you're not senior, your resume itself may be misleading. The alternative is they're lying and you're failing interviews for a different reason, probably behavioral or something strange about your background, and nobody is telling you. If you can link to an example job you have applied or would apply for that would help too.

I'm a mid-level C++ engineer -- if anything I can tell you where your current experience is compared to our requirements for junior jobs, if your resume is fine information-wise and what kind of thing may be tripping up interviewers. I've interviewed juniors and I've never told them they needed a ton of experience -- and most of our juniors have science or engineering PhDs but zero industry experience.