I do many technical searches throughout the day, and ddg falls short basically every time. Google is always closer to the mark with my search intent, with for example, deep links to stack overflow answers that ddg misses.
I use DDG 100% of the time, and maybe retry on another search engine a couple times per month.
There's clearly some difference, but I don't know what it is:
- Search topic (my searches are mostly tech-related, but other family members are also happy on DDG)
- Query style (I may be a bit literal/keyword-inclined, but others are more conversational)
- Location?
If DDG has such severe memory-related side effects, I'm not sure I want to switch.
I called up my siblings and asked, "where did you get this email address, why are you emailing me here?" And they just said, "what are you talking about, you've always been on Fastmail." I have no idea what's going on. Sometimes I'll go to update my system, and I'll be using Pacman instead of the normal Debian package manager. Then the next day it will switch back. Sometimes I'll search for things online, and I won't find the result I'm looking for, but then a day later I'll get a physical letter in my mailbox with the answer to my question written on it.
So anyway, long story short, I decided to switch Bing instead and so far that's had only minor side effects.
[1] I made a small add-on for firefox which tracks DDG usage and lists the usage stat.
As a next step you could try out entirely different platforms. I personally find Peertube very appealing, because it federates with ActivityPub, which I already use and love. There's also LBRY, but I don't get how it works, so no opinion on that. It seems to have more well known publishers on it though.
¹ AFAIK they don't (may not?) have an official instance. But there is a public list here: https://github.com/iv-org/documentation/blob/master/Invidiou...