EDIT:

Further proving these idiots wrong, anyone having the same issue as me can see TrustWallet actually removed using change wallets/addresses. I have tested it a few times now and can confirm - your bitcoin wallet address stays the same no matter what.

Transfering my funds from yet another wallet who was using change addresses, the fees were higher because multiple addresses had my bitcoins - simply from sending some bitcoin.

It is very VERY simple unlike these morons are trying to make it - the more addresses your bitcoins get spreads to, the higher the fees will be if you ever send enough bitcoin that needs to use 2 or more of those addresses. If all your bitcoins stay in 1 address the fee stays the same no matter what the amount if bitcoin you are sending is!

You can further confirm what I'm saying is true here:

https://community.trustwallet.com/t/removal-of-the-auto-change-address-feature/155623

Removal of the Auto-Change Address Feature
What is Auto-Change?
The Trust Wallet team has decided to remove Auto-Change address functionality from UTXO blockchains, namely:
Bitcoin (BTC)