Advice for selecting Label to Release with

I’m a small Melodic House producer with seven self-released tracks. Recently, I released a new song through a label I discovered on Labelradar. The label has over 650K followers, but they insisted I release it through their sub-label. I agreed, thinking I had nothing to lose. A week before the release, they offered me a promotion package, which I bought for about $400, hoping it would boost my following and engagement. It’s been two weeks since the release, and I haven’t noticed any significant difference compared to my previous self-released tracks.

Now, they’re interested in releasing another one of my songs under the same sub-label. Should I go ahead with this, or is there a better way to find a label that’s genuinely interested in my music and not just looking to profit? Any advice on how to navigate this?