Accidentally signed up for spam how do I get rid of it?

I have a gmail account. As of several weeks ago I guess I accidentally signed up for SPAM. It is from different addresses and different subject lines. The spam is primarily career opportunity spam. It is not legitimate job opportunities but BS spam like "Last notice: Walmart interview monday." It is ridiculous. I wonder who is making money off this spam? Seems like maybe a click fraud scheme or something. Also I got the traditional ED spam too. It is really frustrating because until a few weeks ago my gmail, which I have used for almost 10 years was relatively spam free, now it is full of spam everyday. I tried setting up some filters but as the sending and subject is different each time it is hard to filter it all out. On top of all this I am trying to find another job...so I can't just delete every email having the word "job" in the subject line...but I am flooded with bullshit job offers. I have tried aggressively marking the spam as such using the gmail button for that...but still it keeps coming. Almost looking like I need to get a new email address.