I don’t think everyone can be good at using mixers. They are confusing at times. It’s better to keep them as separate assets and build your strategies accordingly.
But, I think not all mixers are hard to use and there might be mixers that are user/newbie friendly. Wasabi wallet seem to be one of the popular wallets that has this function but the op is still having a problem right now and that problem is not about the difficulty of using the mixer but it was due to lack funds. I did a quick internet search and found out that 0.1 btc is the minimum amount to get started but 0.1btc is a bit expensive right now.
Now I know why his funds are not enough. I think there are already enough replies in this thread and some of them already given out an option if which mixer to use suitable for the op that only wants to mix smaller amounts.