No, your followers won't able to see what you see or search on Instagram. Moreover you can like any uploads, and search your liked page ,people and your follower's won't able to see your path. My humble suggestion to you please see the private and security policy of Instagram you get more information about their products. Enjoy :)
Data limits. Data collection limit. Every user interaction can be sent to Analytics as an individual hit, including (but not limited to) each pageview, screenview, event, and ecommerce transaction. As a result, a single session can result in many hits.
A TechNet article describes a Quota as this: The storage limit applies to the site collection as a whole. In other words, the storage limit applies to the total size of the content for the top-level site and for all sub-sites within the site collection. If versioning is enabled, the versions in a site and the content in the Recycle Bins count toward storage limits.