Do you apply directly on their careers page? Do you find recruiters on linkedin and connect with them? Do you cold email founders?
What's your strategy? How did you land your fully remote job?
The best way to stand out is to put some effort into the application. We get many applications that just include a resume, and no additional details. We also get a lot that include some very generic details that could relate to any job post (eg. "I'd like a remote job for reason X"). Applications that include even the smallest bit of customization will put you way ahead of many candidates (eg. "I saw your post on HN and it caught my eye for reason X and I think it'd be a fit for me because of Y").
Cold outreach direclty to me (email or LinkedIn) is usually a good sign, but again those vary greatly in quality. The worst ones don't give me any information about the candidate (eg. "Saw your post on HN, can you give me more details?"). The very best ones demonstrate that you're proactive, and a great communicator (eg. "Hey Ben, just submitted my application for the role I saw you posted to HN. I'm excited about the role for reason X, and think it could be a great fit because of Y. You can found out more about me at 1, 2 or 3. If there's anything you think I could improve on my application please let me know. And here are a few thoughts I had about your company/product from a quick glance: Z. Hope to hear back from you or the team soon, thanks!")
A really important part of fully remote work is communication, and the application process is a great way to desmonatate that, but it's something people often miss.
Best of luck on your job hunt!
So I changed my strategy. I searched for companies I found interesting that were looking for permanent employees. And I approached them with my resume and a nice mail that I wanted to work as a freelancer, not an employee, and offered to meet - even if they weren't interested in freelancers. Simply to get to know each other.
In the weeks that followed, I had many meetings and found some very good companies to freelance for over the years.
Of course, this might not work for larger companies because the HR department doesn't have the power to decide whether to work with a freelancer or not. But I found it very satisfying to work with smaller companies, and it also resulted in some friendships/contacts that went beyond the collaboration.
(Note: As of today I no longer doing contract work because I started to work full time on my own projects)
It helps if you're noticeable on job sites, but there's a lot of bad signal/noise ratio there. I answered 2 queries in the last 2 months because they were interesting, but both positions turned out to not be really remote when I started talking.
Also, it helps to be already employed so you can be picky and take your time :)
Complain to your friends that you want to be making more of an impact.
Get referred to the jobs they suggest.
---
If you have to, maybe email a CV to HR so that it's on file.
If you're using the careers site you're going to have a bad time.
When I was working full time in a completely different career field I found a part time remote job through Dice. I think I found that one by doing a Google search and not actually on Dice.
I'm assuming you are talking about developer roles. As others have said most developer roles seem to be remote friendly these days.
The key was probably that they were a small startup with some degree of desperation because they were ghosted by a previous developer and needed a replacement quick. I also had fit the tech skills they needed (experience in a particular PHP framework, CodeIgniter). The founder was pretty flexible and forward thinking, as, probably from being a former developer himself, let all his developers work remote. The pay wasn't that good but the work was comfortable and got me familiar with web app development in a company that actually uses their tech product to make money for them.
Are you being contacted for positions? If not, maybe your challenge is being noticed by the people who would want to hire you.
I did these things and landed a fully remote job.