LinkedIn has been one of the most underrated platforms out, most people have this idea that it's just for businesses and corporate aspects and not for them. However don't knock it until you try it. Depending on if you want to use it for personal or business use there are many advantages for each. It's never too late, algorithms always change so it may get harder for you to grow the longer you wait but better late than never.
Linkedin definitely has a different demographic than most socials so you will have to adapt, and change direction to the type of content you share but this is what will actually help you. On LinkedIn it allows you to connect to other industry professionals whether it's the same profession as you or ones you are aspiring to be. Similar to facebook you can send a request to become friends with someone which in our case are called connections. You can connect with others and get a feel of their past experience of what they have been through, not to mention they share their insight and really take a deep dive on the business aspect of things compared to any other social network.
You can keep up with friends and family to see what they have been up to work wise as well, everyone is always sharing new content that can be beneficial for you. LinkedIn can open a lot of doors for you as you can reach out to and connect with industry professionals that you may have not had access to on any other platform. Not to mention the searching capabilities are amazing where you can really narrow down what or who you are looking for. One example is if you are looking for a designer or someone that works at a bank or even a plumber you can search that up and filter to pinpoint what you need such as company, experience, title, location and much more making it easier than ever.
On top of all of these advantages it doesn't stop there, LinkedIn also has an amazing organic reach, it may not stay that easy so make sure to sign up now, optimize your account, personalize it to your needs and get to connecting.