~snip
As I said , I doesn't matter if you have one address or not. One address may have hundreds of inputs. You can consolidate in the same wallet or another one if you like, it doesn't make any difference
I figured it now, thanks to everyone for clarifying my questions. I tried some transaction with lower satoshi/byte and multiple inputs and find out some answered.
It's clearer now especially last few days, the fees dropped and I can transaction some below 5 satoshis/bytes, it even dropped around 1 satoshi/byte and tried to consolidate some of my bitcoins.
now as you have understood that transaction inputs are utxo based,
you need to keep in mind about your privacy in consolidating your bitcoin
you are losing your privacy when using multiple utxos from different addresses in a single transaction,
to avoid this you may want to consolidate it one address at a time, use a coinjoin service, or even a mixer