Hello,
First welcome to R2R lots of lovely people and lots of info. It’s awesome that there is another girl and even better she plays with legos

so much fun.
So this question from
@AquariumDani is kinda a loaded question. Way too many opinions and or options etc and taste. All of them are good and valid and all are the worse and the greatest. I highly suggest some research, such as visiting your local aquarium or viewing other tanks. Find some that you like based on visual and color. All of these are good lights but they vary greatly in color of corals. One may be super blue others may be natural, but what are your likes.
You mentioned price point, of less than 300. Yes people will throw eggs and argue with me, but lol I can support what I offer. I would go with the current marine pro loop granted you may or may not go larger and you stick with softies and lps. They can handle some lower sps, but any clams or higher corals you will need the model 4117 60 degree version for success. If you look
@120reefkeeper his tank is amazing and uses these lights. Current usa also has thee best service I have seen on anything. You could go up to probably a 90 gallon with these, but anything larger is pushing it. There are some other leds but most of the ones mentioned you will need two of them, with your tank a 20 long you will have too much shadow on the ends. That’s with the hydra 26 prime and kessill. The current usa is a strip light 24 inches long with 90 degree lens no shadow and will cover length and front to back. Just some thoughts for you to consider as you shop for lights.
Sarah