With an EWS rank of 52,890, getting B.Tech CSE at IET Lucknow is very difficult, as the EWS cutoff for CSE usually closes around 51,000–52,000. You're just slightly above the cutoff range, so the chances are very slim, but not impossible.

You should still:

Apply through UPTAC counselling and keep IET CSE as a top preference.

Keep backup options ready like other branches in IET or good private colleges.

You might have a chance only in spot/last rounds, depending on seat availability.