Upvote:1
What is most relevant is curtailment: for whatever reason, the conditions under which you were allowed to be in the UK were no longer valid and your leave to enter or remain was cancelled. Your Home Office curtailment notice would have set forth the terms and parameters. You had to depart the UK and, once you did, you could not enter the country, as you no longer held a valid visa.
You certainly can apply for a Standard Visitor visa but a decision on its issuance and length of validity would rest with UKVI, not with you, and would take into consideration your immigration history.