Which seed tray was it that you bought? Was there supposed to be a photo or a link to it?
. If it’s a module tray, I find you need a good amount of root growth to aid you getting the plant out, either a squeeze around the sides of each module or push up through the drainage hole with a pencil or dribbler works for me.
I’m moving over to the Charles Dowding ones as they use less compost,are designed to last for years & are tapered to enable easy removal of the plant.
I’ll find a link.
https://containerwise.co.uk/product/charles-dowding-starter-pack/Not cheap by any means but I’m very pleased with mine, I’ve had them 2 or 3 years now. Scroll down to see the other sizes, I’ve only got a few of the CD 60s at the moment. I bought them with some birthday/Christmas money to try a few years back, that was the only size they had but they now do a half size cd30 or 1/4 size cd 15. The number refers to the amount of modules, but all the modules are the same size, quite small, but I tried French beans in mine this year & they were a great success, very little rotting off like normal.