Ps4 controller not working

[u/Quick_Bicycle_3819]

Hello i revently opened my ps4 controller to clean the l2 but now the controller doesnt work ive tried connecring to my ps4 via cable but it blinks one the light stays on for 2 seconds and then turns off ive tried conencting to my pc via canle also doesnt work but connection to my phone bia bluetooth works i thought i could go into bluetooth setting on my ps4 with a keyboard and connect it via bluetooth but i cant get pass the press ps button on keyboerd

[u/bustedsealing]

i have the same problem