OP you need high interest women who are willing to be obvious. Likely your "opportunities" are of the garden variety IOI's. Improve your appearance and those same women will be more willing to be obvious. The same advice applies - better clothes, work out. You only got laid 10 years ago because the game was much easier and you were also younger.
Just over a year ago, a female friend was on my couch with me. She commented to me about how much she missed having a man in her life. It doesn't get much more obvious/high interest than that, does it?
Some other examples of IOIs from the past decade:
A female coworker sent me flirtatious texts where she bragged about her backside, told me how good I look, complained about her boyfriend (and how she wasn't sure they'd last), told me how comfy her bed is, etc.
Then a different coworker drew a picture of me holding a bouquet of flowers (and gave me the picture)
As is the case with so many fellas, dude's problem with the ladies is really just symptomatic of difficulties being social/sociable more generally. Anyone who regularly hides behind justifications such as "So that's why I sideline myself", rather than speaking candidly("It's uncomfortable to get out of my comfort zone, and I'm less than thrilled by the thought of being wounded emotionally, even though this is inevitable... I'm allowing my own terror to cripple me")makes wearisome company
Cases like OP are almost certainly going to become more pervasive throughout The Post-Industrial West, as it becomes more possible to work almost entirely from home, and unnecessary to go into the office more than 1-2 times per year
One factor I suppose I have working in my benefit is the fact I'm not a total hermit. I travel a lot, I work in person (and I typically flirt with at least 1 woman per workday), etc
