Hello!

I am just starting out on my Real Estate Investing journey and am looking to get a start in Wholesaling. I have been learning a lot through online sources, but one area that I am still unsure of is how much detail a Purchase and Sales Agreement needs to have when entering into a contract with a motivated seller. I have seen examples of PSAs that are one page long, and I've seen other PSAs that are 11 pages long and require a degree in Legalese to read. My questions are, what are some general recommendations when it comes to choosing a PSA to use? Is it required to use a PSA that has been approved by a realty or legal organization? On the other hand, is it permissible (or even recommended) to write up my own PSA? Thank you for any advice and recommendations.