fpv learner

Hello. I am a bit new at this, and Im having a bit of an issue: trying to run fpv gear on my quad everything seems fine till I get just a little ways away maybe 100ft, probably less, when I lose all control and my quadcopter falls from the sky till it regains signal. ive only flown it 4-5 times...

Heya so im still unsure of what i want for FPV, I need a setup to work with a 2.4ghz transmitter, and idealy i would like 1 mile of range reliably, and it idealy needs to be super reliable, so i can just lug it out with me and it works, quick and easily. I have around £250 to spend and not sure...