i have loos veginea n so my husband dont trust me

You can't make your vagina tighter. You can work the muscles in your vagina to give the sensation of it being tighter. You can work your pc muscles by squeezing them. It's the same thing you would do if you wanted to stop urinating midflow. It's very discrete so you can do it at anytime. Over time your vagina should feel like it's gotten tighter. It's also good to use these exercises during actual intercourse.

if you can get very excited during sex , so that you can reach your climax and have your orgasm, your husband will be happy that you do that and wont worry too much if you do not feeel tight to him,

cos as you climax, your vaginal muscles will clench several times and give him a nice feeling, as well as bringing relief from sexual tension to you as well.
if you have a problem reaching your orgasm during sex, or have never had an orgasm, get hubby to suck your nipples for around 20 mins , while playing with your clitoris. that will bring you to the brink of orgasm.
i hope you can have sex that will be enjoyable for you and your husband.