So I have 3 stucked transactions.

But what about these first two transactions? I saw that the only way to make it confirm is to get in touch with miner who will help. I did, but the fee I sent to him to get the transaction unstucked is not confirmed either.

1. Antpool's accelerator: https://www.antpool.com/user/prioritiseTransaction.htm?m=savePrioritiseTx   (Users have to create an account first, then everything it's completely free)
2. ViaBTC's accelerator: https://pool.viabtc.com/tools/txaccelerator/ (Minimum fee of 0.0001BTC/KB is required, limited tx's on hourly basis and no registration needed for their free accelerator)
3. ConfirmTX accelerator: https://confirmtx.com/ (less than 400 byte transactions, are processed for free)