Than or that

about of Than or That, can somebody explain, when i should use? thanks!!

It’s easy:
‘than’ we use if we compare: He is older than me.
‘that’ we use if we add a subordinate clause:
He said(1) that he would be at home that time.(2) - two sentences and ‘that’ connect them.
Another example: I know that you studies English.
Good luck with English!

thank you very much for answer me my friend!