I find it difficult to answer exactly to this question. You know, I bought a house that, according to the previous owners, was almost new. But over time, I found cracks on the basement through which moisture began to seep inward. I read how to make cracks in the outer walls https://www.pomwaterproofing.ca/leak-and-crack-in-walls-outside/ but then I just called a specialist from Pom Waterproofing to do the work efficiently and reliably. Therefore, I advise you to simply turn to a professional so that he assesses the state of the foundation.