My some personal search tip! :

1. look around through Instagram feed and Pinterest, youtube suggestions. Something inspiring reaches eventually.
Just need to get out of the art block zone to make it.

Sometimes just googling keywords, or stock photo site(example : Shutterstock etc - The paid sites are also quite helpful.) searches.

Unfortunately the Reddit search is atrocious. If you want to search Reddit, use Google. If you have certain interests, or are looking for something specific, chances are if you Google "Your Interest Reddit" you will find relevant subreddits right away.

If you want to see a random mix of popular posts each day, you can switch the timeline to "Popular". You can also sort these by sub-filters like "Rising" or "New".

If you want to see a list of the most popular subreddits, have a look at http://redditlist.com/

2. I personally search in google with “keyword” reddit, “keyword” site:reddit.com.
https://www.reddit.com/r/coolguides/comments/l7jlim/guide_to_google_searches/
Look at the comments.

3. https://yandex.com/ Yandex image search(Yandex search) is more comprehensive than Goo gle. I type brochure design, magazine or what i want.

4. or usually use duckduckgo and add "-ai" to search if i see too many ai results