Buying stocks on margin

I was ill positioned for this downturn, with a major lack of cash. That said, I have a substantial borrowing capacity using my investment accounts as collateral. The interest rate for this borrowing floats, last I checked it was around 3.5. This goes against every conservative investment philosophy I’ve tried to live by, but I’m seriously considering throwing some borrowed money, trying to find some bargains. One way to alleviate the risk to some extent would be to try to focus on dividend paying positions, but obviously those could go away. And these airlines and banks- holy hell. Have any of y’all ever gone this route?

PS- I’m in my late 30’s so open to some risk.