You didn't give information about how exactly you lost your coins, but I can assume during the early days holders of Bitcoin were still adapting to safety and security and would have made a couple of mistakes leading to loss of their assets.

I was not into Bitcoin back in 2013 and I would also wish to buy Bitcoin at the price it was back then, this is obviously not possible, what is possible is buying bitcoins now and holding for the period from 2014 - today, which is about 6 years and positioning yourself to benefit from Bitcoin;

• Bitcoin is highly divisible and one can buy satoshis which are smaller units of a whole coin.
• Bitcoin's supply flow is constantly thinning due to having and as such there would be less bitcoins being pumped into circulation in 4 years than now. An increase in demand would probably lead to an increase in the price of Bitcoin
• If you set an investment strategy, with funds you can afford to put in, you can still recover your losses. Check out this thread - (SSS) - A Sane and Simple bitcoin Savings plan
A key highlight from that thread which could be helpful;