CiviCRM v5.35 is currently available as a release candidate (RC). It is scheduled for stable release on Wednesday, March 3. Security fixes will be provided as a subsequent patch-release. To download v5.35 RC, see http://download.civicrm.org/latest
To learn about v5.33 ESR, see: https://civicrm.org/esr
Note: The minimum system requirements for PHP have been tightened slightly in recent releases. CiviCRM v5.33 requires PHP 7.1+, and CiviCRM v5.35 will require PHP 7.2+.