I have done about 400 in total.\nAfter failing with interview with previous big tech company,\nI feel that it is really very difficult to get into one of them.\n\nShall I give up it and focus on more different technology to get more chance from small and medium sized technology companys which do not exam you based on LeetCode questions?

I have done about 400 in total.\nAfter failing with interview with previous big tech company,\nI feel that it is really very difficult to get into one of them.\