LinkedIn advertising is better than ever. Sure, it is still a little expensive and clunky, but more and more brands are flocking to it for good reason. https://ignitevisibility.com/linkedin-advertising/
When it comes to LinkedIn Ads, you need to understand that there is going to be a high cost per click. So you really need to be prepared to spend money to make money. LinkedIn Advertising is also targeted towards B2B in most cases and people really don't want a hard sell.
In many cases, LinkedIn advertising does the best when promoting something like a webinar, a whitepaper or even an event. The best part about advertising on LinkedIn is the targeting. You can target people by company, location, title and more. This is really powerful.
Learn more about LinkedIn advertising in this video.