[Defensive Problems with Asymetric 4-1-2-3]

Thank you so much! Tbh i completely forgot about the TI's I set up since I tweaked this formation so much. This helps me understand the formation so much better

 

[Defensive Problems with Asymetric 4-1-2-3]

I have been trying to get this formation to work, but I end up conceding an unholy amount of goals. It has actually given me the worst defensive record in the Bundesliga. I have already switched from a regista to a defensive DLP to provide a bit of defensive support from the midfield and told the RCB to stay wide but it has not really had an impact. Any tips as to how I patch up the leaks at the back?