Best fast execution, reliable broker ? With API, basic questioj but it's really sensitive here

Hey, I come from crypto and dont know much about stock brokes, i got stock strategy in mind. Asking about a broker may sound basic but I think my requirements are very strict, it's a sensitive situation It requires fast execution, short positions with some sort of leverage, id hope 5x or more, if i can get 20x or 50x maybe with options im not sure, i need fast short with leverage, get it filled ideally sub 1 second, 2 seconds is alright, on stocks that have billions in marketcap, and I'll trade like 10,000-30,000 id say peak as money, idk if with the leverage amplified, it would actually be alot more, so slower to fill, not sure I guess depends what type of leverage is used, I'm curious about best possible way to short with leverage. But anyways, Basically just looking for a fast broker, with API so I can use it with algo strategies, somehow that he isn't against me, cfd sounded good a first for execution time, but I think they will play tricks on me when I win big, so I can't go that way I think, or am I wrong ? I like cfd and the leverage it can give, but worry about tricks when I win too much and bankrupt the broker. Like reliability of broker is really key here, i don't want to send an order, and have the cfd broker tell me I actually bought at a price that only happened 5 seconds later or some similar bullshit, or straight up delete my trade from history and steal my profits or something. Can you fill puts/options fast ? Are options generaly slow or can be fast depending on liquidity ? By fast I mean sub 1 second or sub 2, thats what I need, over 2 seconds is too slow for me so better to skip the trade. Im new to this but I know as strategy itself I have an idea, it's the details that I don't understand in stock market coming from crypto. Looking for: Fast, reliable, leverage broker, (with API!) that supports all possible stocks, usa markets or other markets across world Is interactive brokers the go to?