It all depends on the value of the car, the age, the difference in coverage vs what you pay each month plus what risk you are able to cover yourself. There are various calculators available online to see wich insurance is best for you.
It also depends on the replacement car you would like to buy.
A tree totalled my husband's car last year (he wasn't in it), we got €1000 for the car from the insurance. When we wanted to buy the same brand, we discovered the equivalent newer models were more expensive than what we had paid for the car. Although we really liked the brand and model, we switched to another to save money. Should you absolutely prefer a certain model, it is good to know what those cost now.
I think 7000 is still a nice value. Should you have an accident and you made a mistake (maybe only in the eyes of the insurances), you will loose that 7000. Maybe collision for another year, or two, won't be that much more expensive and pays should you have a bad day? See what it would cost more versus just third party.
Can you shop around for a cheaper car insurance?