Continue trying for C1 VX pre-approval or give up and move on

Hello! I have been trying for the past ~6 months to get pre-approved for the VX with no success. I am now 0/6, 1/12, 3/24 (not counting non-C1 business cards). I am interested in getting some new Chase cards, specifically United credit cards, and have been putting off getting them to boost approval odds. At what point should I just give up trying to get the VX and start getting the other cards I am interested in? It feels like once I start opening up more cards, I am closing book on getting VX.