What’s the best way to clear heavily overgrown vegetation?

Hi everyone,
I’ve got a piece of land that has become seriously overgrown with thick grass, weeds, small bushes, and some young trees. I’d like to get it cleared and back under control, but I’m not sure what would be the most practical approach.
I’m considering using machinery rather than doing everything by hand, especially in the areas where the vegetation is quite dense. I’d appreciate some advice from anyone who has dealt with a similar situation.
What type of machine or attachment would you recommend for clearing overgrown vegetation efficiently? Are there any particular things I should consider before starting?