There are all kinds of crystal buckle connector for flex led strip

Solder-free light strip buckle&plug for all kinds of flex led strip lighting

https://youtu.be/YS-ICW0OLWU

https://youtu.be/fYi-cDhpKzM

https://youtu.be/vRtRN9qw7IY

https://youtu.be/ootqqdtpsa0

https://youtu.be/cXoRMZAeJjg

Download the clear connection photos from here please

http://www.rose-lighting.com/wp-content/uploads/sites/53/2022/11/connection-photo.rar

There are some solderless plug/connector for led strip connnection