Low beam bulb

[Olliefrom83]

Hi Guys

I have a slight problem with my 2014 f25 non lci
I had a low beam bulb go out, so got some replacements, and decided to change both sides, I pulled both bulbs out and put in the replacements however they don’t seem to sit tight, no matter how hard I push them in just the slightest knock will pull them back out, even putting the cable back on seems to dislodge them. Am I doing something wrong? as the ones I removed seemed pretty tight in place

Cheers in advance

Ollie