The majority of the total supply is used to remain in control of the network. This is set up to ensure that no malicious actor can take over the network through the development phase. This portion, roughly 33% of the total supply, will be locked in a wallet and eventually burned in order to hand over the LGCY ownership from team to community.
Total circulating supply is split up in: Presale Tokens, Developer Funds and Team Tokens. Apart from that 5% has been reserved for providing exchange liquidity. A portion of that has already been used in providing liquidity on Uniswap. After the presale the team put op 700k of locked liquidity on Uniswap.