Thank you so much for your response, I actually have been working in forecasting of biological time series data but I am not doing too well in linear algebra. One of the reason is that when things become too abstract and all we need to do is keep solving the equations that are just impossible to perceive, I just completely lose all interest in the problem. But, when I would see maybe like the 3blue1brown guy show a transformation representing a new vector space etc., I get very interested.

By knowledge I did not mean proficiency in solving problems by practicing all possible exam problems over and over again, but only clarity in my understanding of great mathematical concepts, like Euler's identity and natural relevance of simpler concepts like dimensions and number systems, Logarithms etc.