Elasticsearch is not working

I am receiving error as below,

● elasticsearch.service - Elasticsearch
Loaded: loaded (/usr/lib/systemd/system/elasticsearch.service; disabled; vendor preset: enabled)
Active: failed (Result: signal) since Fri 2021-06-04 21:13:12 UTC; 1h 12min ago
Docs: https://www.elastic.co
Process: 76378 ExecStart=/usr/share/elasticsearch/bin/systemd-entrypoint -p ${PID_DIR}/elasticsearch.pid --quiet (cod>
Main PID: 76378 (code=killed, signal=KILL)

Jun 04 21:13:08 testmispelk systemd[1]: Starting Elasticsearch…
Jun 04 21:13:10 testmispelk systemd-entrypoint[76378]: [0.003s][warning][logging] Output options for existing outputs are>
Jun 04 21:13:12 testmispelk systemd[1]: elasticsearch.service: Main process exited, code=killed, status=9/KILL
Jun 04 21:13:12 testmispelk systemd[1]: elasticsearch.service: Failed with result ‘signal’.
Jun 04 21:13:12 testmispelk systemd[1]: Failed to start Elasticsearch.

Please guide me how to deal with this.

What messages do you have in your logs (usually in /var/log/elasticsearch)?