Absolutio

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.reasons for high fees in blockchain:

.network congestion:
.mempool: mempool (memory pool) is the place where all unconfirmed transactions are stored. when there are many transactions in the blockchain, the mempool becomes full. for example, during periods of high demand for bitcoin (for example, when the price rises sharply), the mempool can contain tens of thousands of transactions.
.transaction priority: miners choose transactions with higher fees to maximize their earnings. if you set a low fee, your transaction may be delayed for several hours or even days.
.transaction size: transaction composition: each transaction consists of inputs and outputs. if you have several small inputs (for example, you received many small payments), they take up more space in the block. likewise, when you send payments to many recipients at the same time, it also increases the size of the transaction.
.example: a transaction with one input and one output might take up about 250 bytes, while a transaction with multiple inputs and outputs might take up several thousand bytes.
.transaction accelerators: there are services like ViaBTC that offer acceleration of your transaction for an additional fee.
.this is useful if your transaction is stuck in the mempool due to low fees.
.replace-by-Fee (RBF): this is a feature that allows you to resend the same transaction, but with a higher fee so that miners will accept it faster
.IF YOU USE THIS FEATURE, YOUR TRANSACTION WILL NOT BE PROCESSED AUTOMATICALLY! REPORT YOUR TRANSACTION CHANGE TO THE SERVICE SUPPORT CHAT!
.periodic surges of interest in bitcoin: speculation and news: when bitcoin receives media attention or when important events occur (for example, the legalization of bitcoin in any country), the number of transactions increases sharply.
.historical examples: in december 2017, during the “crypto boom”, transaction fees reached $30-50 due to the huge number of transactions on the blockchain.
.improvements and changes in the blockchain: SegWit (segregated. witness: This update, introduced in 2017, allowed for more efficient use of block space. however, not all users immediately began to use it, which temporarily caused fluctuations in Lightning network fees: this is a second-tier solution designed to process micropayments outside the main one.
.bitcoin blockchain as it develops and is implemented, the main blockchain may be unloaded, which will potentially reduce fees.
.thus, the increase in fees for sending bitcoin is due to many factors, from technical features of transactions, to current events in the world and changes in the Bitcoin blockchain itself.
.in conclusion, follow the following rules to avoid large expenses on high commissions when using BTC:
.1. monitor the load on the blockchain during exchanges. if possible, send it later when things have calmed down online.
.2. use Ligtnininig network and SegWit addresses to receive BTC (commissions when using these types of addresses are several times lower).
.by following these simple rules, you can save up to 90% on commissions in extreme situations, i.e. instead of $150, you would pay about $15, which is also a lot, but still much less than at peak values.