PancakeSwap V2 functions called automatically after adding myToken to a new pool: safebuy(), swapExactETHForTokens(), swapExactTokensForTokens()

Question

I've created my own BEP20 token on BinanceSmartChain. After token creation with myWallet I added liquidity on PancakeSwap to a new liquidity pool (myToken, WBNB -> myPool).

There should be two transactions (token transfers) at the BSC explorer (BscScan):

1. initial token creation (0x00 -> myWallet)
2. function addLiquidityETH(myWallet, myToken, WBNB -> myPool)

But at the same time (exact same timestamp) there were more transactions:

3. myToken transaction (function Safe Buy) from myPool to a "public" PancakeSwap wallet that records a lot of transactions.
4. myToken transaction (function Safe Buy) from this public wallet back to myPool (amount: a small fraction of the value before)

A few seconds later there were more transactions I never called via function order PancakeSwap myself:

5.. swapExactETHForTokens called a few times swapping myToken and WBNB to various wallets.

Does anyone have any idea as to the purpose of the other transactions and why PancakeSwap is doing this?