Error while installing elasticsearch onto my ubuntu 20.4 version

[yashi0099]

root@yshicoder:/home/yshicoder/Desktop# sudo apt-get install elasticsearch
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package elasticsearch

#131

[Vijayan Balasubramanian]

Can you try the instructions that are mentioned here?
https://opendistro.github.io/for-elasticsearch-docs/docs/install/deb/