Firstly, just taking your question very literally - if you know some verbs, you already know how to make a Korean sentence, because a Korean sentence can be just a verb. Korean is a very 'contextual' language, so you can leave out subjects and objects where they are clear from the context. So simply saying
can mean 'There aren't any', 'I don't have one', 'She isn't here', or possibly some other things depending on context.
Secondly, you could make sure that you understand these examples of basic sentence 'types':
something does something (using an action verb):
Yeongsu sleeps - 영수가 잔다
something is some way (using a descriptive verb):
The mountain is green - 산이 푸르다
someone does something to something :
Yongsu reads a book - 영수가 책을 읽는다
something is something:
He is a Korean. 그는 한국사람이다
something is not something:
He is not a Korean. 그는 한국사람이 아니다
something becomes something:
Rain turns to snow.비가 눈이 되다
Thirdly, it's good to practice and reinforce vocabulary in a context that helps you remember it. This can be 'real life', but if you don't have a lot of opportunities to speak Korean, a good textbook might have a more cohesive structure than most online resources you can find. https://www.reddit.com/r/Korean/comments/rq3th/the_ultimate_beginners_resource_thread/ has some recommendations for textbooks.