Advice please any will help

I’m thinking of leaving my husband, he’s in the Royal Air Force and I just feel trapped and my life is just passing me by when I met him I was looking at going into the police, I joined the army as military police but because my husband was in the RAF it would never have worked out so I gave up the army then the past three years we have moved around so much (4 houses in two years) my 6 year old just can’t settle and I now have hardly any friends, I’m struggling to get a job as I’m stuck to certain hours plus I’m wanting a career for myself but every time I try and sort out a college course or university a problem arises eg started a police course upon start date my husband couldn’t help out with child care soooo I had to quit, so I decided to try nursing and started to work towards my degree but because we need another full time wage I can’t do uni full time plus I can’t afford the after school childcare as well as uni and travel but yet my husband does whatever with work going away for sport activities days and days on end or applying to extra courses because he feels like it and signing up to officer training but yet I’m here stuck in dead end jobs depressed and just feel like giving up, I don’t really know what advice I want but just needed to rant