This is the 496th most frequent German word.
sollte
"Should" or "ought to."
In this sentence, 'sollte' indicates a statement of advice reported from another source.
Er sagt, ich sollte mehr Wasser trinken.
He says I should drink more water.
Here, 'sollte' is used in a conditional sentence to express what would be advisable in a hypothetical situation.
Wenn ich du wäre, sollte ich das Angebot annehmen.
If I were you, I should accept the offer.
Here, 'sollte' is used as a subjunctive form to express advice or recommendation.