I've been on both sides, as freelancer and as a employer. Now mostly hiring, sourcing for partners via: word of mouth, Linkedin business, Fiveer, Upwork, Facebook groups, BHW, agencies etc. Best is definitely via recommendation from sources we trust, believe same for you. Ask your fellow devs if someone is hiring.
Our next choice would be a freelancing platform, mass of talent, convenient, some protection. Linkedin works well surprisingly, I get from time to time some DMs, talked with some agencies as well. For you specifically I would say join communities where business people hang around related to your industry, web3 AND it's not crowded with all possible profiles - like the freelancing platforms. As a newbie I doubt you're to get some serious job via freelancing platforms.
BHW is good I believe, there are for sure Telegram, Facebook, Discord groups from your industry. Post there a thread and when posting tell briefly what you're good at and possibly share a link to your personal page, github, linkedin. You need to to grab the attention of the reader, ask them to reach out if interested. Now for example your potential employer could be reading this, but you didn't provide much info. Don't expect they're to reach out to you, if they didn't recognize value, its' an opportunity missed. There are also specialized agencies out there, but do have a screening process so it may take a while to get boarded - they can find you a job, taking a cut.
Hope this gives you some ideas, GL