Multiple cycles of freezing in dry ice or ethanol bath and then thawing it at room temperature or 37C. This method is simple and since the cells swell as ice crystals form during the freezing process and contract during thawing, the cell walls will ultimately give in and break as the sample is subjected repeatedly to the process.

Alternatively, use of high-frequency sound waves in the liquid cell suspension. The mechanical energy produced in the process facilitates the formation of microscopic bubbles which then cause shock waves to radiate throughout the sample once they implode. Keep the sample immersed in an ice bath and make sure you only apply short bursts of ultrasonic waves to avoid overheating. This method can be used to homogenize small batches (less than 100 ml) of cell, bacteria, spore and finely diced tissue samples.

Probe sonication on ice works quickly and thoroughly.

Ultrasonic homogenization will work good for smaller volume.

Some links you can refer:

https://info.gbiosciences.com/blog/cell-lysis-5-common-cell-disruption-methods-g-biosciences

Article A Review on Macroscale and Microscale Cell Lysis Methods

https://www.laboratory-equipment.com/blog/cell-disruption-sonication-vs-homogenization/