Samsara is limitation one experiences and caused by not knowing difference between REAL (Self; atman) and UNREAL (Not-Self; anatman).
A samsari seeks freedom in the world through acquisition (beauty, spiritual experiences, knowledge, wealth, fame, success) – and enjoyment of those acquired objects.
Thus “acquire + enjoy the acquired” summarizes life of every individual born in past, present and future, whose under spell of ignorance; believing “I” is body-mind.
Nothing is wrong nor right about samsara. Only that it has an inherent limitation of endless pain/pleasure cycle.
EG: Pleasure upon making love, pain upon tension. Please upon hired, pain upon fired. Pleasure upon feeling energetic/clear, discomfort upon feeling tired/dull. Pleasure upon security, pain upon uncertainty. This is life of samsara. One can't neither lose nor win.
Spiritual world is not exempt from samsara, it's just a more sophisticated/subtle version of it.
Notice the symbolic image above. It's round. Meaning there's no beginning/ending point of samsara. Also each segment of the wheel has a different life/situation.
Thus samsara is beginingless combinations of life/situation experiences.
Samsara ENDS when one dis-identfies self from ahamkara (doer/enjoyer) and re-identifies self with atman.
NOTE: These are technical words and only meant to be handled by the Vedanta expounder. They are not to be spoken outside guru-śiṣya-paraṃpara. No differently then a science teacher doesn't use technical words outside class. Thus these words only become meaningful inside a mutually cooperative environment between teacher-student.
How to end samsara? This is done gradually and systematically within Vedanta classes by the Vedanta acharya.