Beating cover 4

I just played a game where my opponent ran cover 4 and dropped 8 but had 5-6 guys on the line every play depending on my alignment. He pressed his entire defense but had them bail and I wasn’t able to get the deep ball off. I tried to go to the run which is usually my bread and butter but I was getting hit behind the line almost instantly of both inside and outside zone. My best plays were the jet sweep but towards the end of the game he started clamping those as well. Any advice is greatly appreciated.

For more info there were 4 deep DB 2 LBs in the middle and the other 2 DBs were in either cloud flat or curl flat.