Salsa from local restaurants in ETX

I’ve been in ETX my whole life and there’s a type of salsa you find in some of the small, locally owned restaurants that I am desperate to recreate. It is sort of watery and tomato forward, but still savory and spicy. Not really sweet at all. Usually chunks of raw onion and cilantro. There are visible seeds, but I don’t know if they are from the tomato or pepper. It’s the free salsa you get before your meal. I’ve never been able to recreate the texture or flavor. The one I grew up with was even more watery and a brighter red, but it is the most nostalgic thing ever and the restaurant has closed. I tried to get the recipe but they wouldn’t give to me. Please help!!