The most common and most likely answer to this crossword clue is the 5 letter word TRIER
I've seen this crossword clue in The Times
T
R
I
E
R
More clues leading to the result TRIER
- Row about component of education for painstaking student?
- One persevering as a judge?
- Everybody loves one right back? That's rare
- Peckham’s man with a broom lacking general intelligence, good assiduous sport?
- German city individual making all-out effort
- Judge maybe in German city
- One working as judge in German city?
- Tourist getting rid of pennies, one hears
- German city God loves?
- Top lady abandoning dog in German city
Buddy explains!

The straight part
We know that "Everybody loves one" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case everybody loves one = trier.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does TRIER mean?
TRIER noun- One who tries; one who makes experiments or examines anything by a test or standard.
- An instrument used for sampling something.
- One who tries judicially.
- A person appointed by law to try challenges of jurors; a trior.
- That which tries or approves; a test.