Hi
Would you tell me if this paragraph is natural?

Definitely, yes. I strongly believe one of the major drawbacks of owning a business is overwhelming experience that owners would have during the crisis. Taking the leap into business ownership leads you through the gamut of emotions, from exciting to terrifying, all at once. Take fitness-related businesses as an example, right now lots of gyms privately owned are closing due to COVID-19 pandemic. Thus, being a business owner can be extremely stressful

Question

Hi
Would you tell me if this paragraph is natural?

Definitely, yes. I strongly believe one of the major drawbacks of owning a business is overwhelming experience that owners would have during the crisis. Taking the leap into business ownership leads you through the gamut of emotions, from exciting to terrifying, all at once. Take fitness-related businesses as an example, right now lots of gyms privately owned are closing due to COVID-19 pandemic. Thus, being a business owner can be extremely stressful

Answer

Instead of “the crisis”, I think it sounds better to say by “a crisis like this” (it seems like you’re saying it more generally). One other correction regarding punctuation:
“Take fitness-related businesses, for example: right now, lots of privately-owned gyms are closing...”

Answer

Great! I couldn’t have written it better myself.

1 tiny tweak needed:

THE overwhelming experience......