Go based on the job description and if you find a company you want to work for, figure out what technologies they use internally via open source or LinkedIn profile skill sets and job ads. Write on your resume specifically what the job ad asks for, practically repeating what it said, and mean every keyword. If you don't have the skills listed, don't apply for that specific position. Full stack or not, if you want front-end, learn front-end technologies. Starts with the browser, might end at the backend, but honestly? People will love you if you simply don't mess up existing code and can learn on the job from more experienced devs. I don't think that will ever change, it's just getting your foot in the door that's more interesting. As much as possible, try to gain the interest of your prospective manager and ... sometimes it just takes luck for both you and your prospective employer to agree you're a good fit long enough to sign the paperwork and deliver during the first few months. It's okay if the job's not what you expected, as that's happened to me for pretty much every job I've had. Thankfully, for most employers, "just doing your best," is enough. Mostly.
This idea is missed by a lot of candidates "Write on your resume specifically what the job ad asks". When I am navigating the online job posting jungle there is one thing I try to remember, you are being judged by the paper you present. Your goal is moving to the next step (interview)so you can dazzle them with your skills/personality. Spending some time learning about the tech the company uses, and from the JD, how they use that tech instead of rushing as quickly as one can to the submit button can make a huge difference. Give some consideration to who is on the other side of that submit button. In most cases the person reviewing your resume is not technical and could really use your help discovering why you are a fit for the job. At some point the non-A playing Ninja Rock Starey regular folks (myself included) are playing a numbers game and tailoring your resume to speak to the specific position/company can help shorten the odds. That being said, networking is by far the best way to find a gig but can take time, and always works best when you have a job.