Can a Planet Turn into a Star through Gas Accumulation?

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A planet could theoretically become a star by accumulating enough gas, specifically hydrogen, to reach the conditions necessary for nuclear fusion. The minimum mass required for spontaneous fusion is approximately 10^28 kg, which is around 20 times the mass of Jupiter. If a planet collects sufficient hydrogen and achieves the necessary temperature and pressure, fusion could ignite in its core. This process hinges on both mass and composition, as a hydrogen-rich environment is essential. Ultimately, while the concept is intriguing, the practicalities of such a transformation are complex and unlikely.
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Would it be possible for a planet by collecting gas to become a star. I mean if it were to collect enough hydrogen, the temperature and the pressure at the surface of the planet could get high enough to start fusion ?
 
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The minimum mass required for spontaneous fusion is about 10^28 Kg [around 20x the mass of Jupiter]. Assuming the composition is amenable to fusion [lots of hydrogen], the core would ignite once the former planet accumulated the necessary mass.
 

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