Mixing doesn't ensure 100% anonymity with bitcoin, it helps to break the connection with your address and receive coins from different source but government agencies wre going against the mixers even though it's not illegal to mix coins due to the reason like it's used to launder hacked funds on multiple occasions.
So the answer depends on who you want to hide it, if it's about government then mixing won't be enough but it helps with other use cases.
Even though it's not illegal? This sound like a war you can never win with you just saying it's not illegal when many people are using mixers to escape from getting caught.
OP is mixer banned in your country? I think this is the best question I can ask you, if it's banned then forget it because you could end up in trouble, you are the only one who knows why you are using mixer.
Don't forget, you are not completely off the radar, it covers your track but there are still some catch, don't use mixer for any crime related transactions, it won't help but yes you are free to use mixers in 2025.