How to stop making my concealer look like this 😭

By the way I use the fit me powder and the Loral paris concealer and use a color corrected (red one) but still it’s grey and I use tinted sunscreen or moisturizer before doing my concealer, no primer or etc please recommend cheap stuff I’m severely broke 💅 and I need something to beat the school air because it always cracks and just separating

Help please !