What do you hate the most about digital marketing?

(Used to run ads for YT and spent time working on ads for Google Search, so I consider myself knowledgable) Desktop extension marketing (driving user acquisition to an extension on one of the web store). It's an opaque world with very little clarity on what works and what doesn't.

If I were to call out one thing - it's attribution. I am working on multiple channels and campaigns but it sort of becomes difficult to clearly figure out the impact of each or acquisition cost from each channel/campaign. The best bet is to look for overall numbers and keep optimizing basis related metrics. How do you guys treat this problem?

Lack of metrics that measure progress made in converting strangers into brand advocates

The client has no budget and/or patience and keeping up with the Algorithm.

I hate that it`s difficult to choose product now in era of digital marketing

All the fake Facebook & Instagram accounts driving the cost of the ads up.