Leave for somewhere where you can have a strong mentor + supportive team. Not all teams are mature enough, skilled enough, and with enough allotted time to support typical junior staff: Most early career folks don't know how to figure things out, so mentorship matters.
It's best to leave a bad job within 3mo, or at least 6mo, as that signals it a mismatch vs you having a fundamental flaw (vs getting fired at the annual review / quitting after your bonus: horrible look). You letting it drag out so long is a real problem, so maybe an internal transfer would be less of a CV hit.
It's best to leave a bad job within 3mo, or at least 6mo, as that signals it a mismatch vs you having a fundamental flaw (vs getting fired at the annual review / quitting after your bonus: horrible look). You letting it drag out so long is a real problem, so maybe an internal transfer would be less of a CV hit.