That probably says more about the market you’re in, or you as a candidate. Every time I’ve looked for a job on LinkedIn I’ve found one almost immediately, and the recruiters I know who most reliably have something for me I all met via LinkedIn.
Other sites will typically just have less jobs posted, less users, and marginally worse features. If you can’t find a job on LinkedIn, going to a slightly worse version of the same thing probably won’t be the change you’re looking for.