Did you think that commenting on posts will help you grow?
Even if you really liked that post and wrote a very good comment, it's hard to grow only with comments.
Most think engagement only means to find accounts and comment on their posts every day.
But engagement actually means to build a connection with them which would help you gain exposure within that audience.
This doesn't happen in the comments. This happens in the DMs.
The most effective ways to slide into the DMs of large and medium sized creators are story replies and voice messages.
These are both very personal and there's a high chance they would accept your message.
After that you can start a genuine conversation with 0 expectations, but only to build up a connection.
Continue this conversation, exchange ideas, and turn into friends.