I have always had problems with “Reach” on my seedlings. Multiple trays in a 2’x3’ rack with light on the top one. (Inside the house, one south window available.) Cats can be a problem too.
(With tomatoes you can at least bury them deep and they will develop additional roots. Some people lay them on their sides and bury them. I have not tried that yet!)
Lights should be 2” from the top of the plant as it grows, so move things up or down as needed. 16 hours ON, and 8 hours OFF - which is JUST as important. They need to rest, as if they were growing in Nature and nighttime rolls around.
Not sure about Pollard’s lights, though. That might be too much heat too close to seedlings at all those ‘lumens’ so you’ll have to research that, but still remember to turn them OFF when you go to bed, or use a timer.