how to get LinkedIn premium for free?

LinkedIn Premium is a subscription service offered by LinkedIn that provides additional features and benefits beyond what is available with the free LinkedIn account. LinkedIn Premium offers several plans tailored to different needs, including:
LinkedIn Premium Career:
Enhanced access to job insights.
InMail credits to directly message people outside your network.
See who viewed your profile and how you compare to other applicants.
LinkedIn Premium Business:
InMail credits for direct messaging.
Advanced search filters to find ideal candidates or clients.
Access to professional development courses on LinkedIn Learning.
LinkedIn Sales Navigator:
Targeted lead recommendations.
Advanced search and lead saving options.
CRM integration and real-time updates.
LinkedIn Recruiter:
Advanced search filters for finding the right candidates.
InMail credits for direct communication.
Collaboration tools for teams involved in the hiring process.
Keep in mind that LinkedIn may update its premium offerings, features, and pricing over time. It's recommended to check the official LinkedIn Premium page or contact LinkedIn directly for the most up-to-date information on their premium services. Additionally, as of my last update, LinkedIn often provides a free trial period for users to explore the premium features before committing to a subscription.