I wonder if all my bitcoins are safe or if I need to move all my coins to a new 24key seed?

I have many bitcoinadresses containing BTC, recently I made a small send where I sent 0.20btc to a person.

before sending any btc to anyone just recieving btc this is how it looked (I have modifed adresses and amounts)

for this example I use 1btc/each adress and 10 adresses total:

1. 1aaaaaaaaaaaaaaaatqwt (first and oldest btc adress in trezor)  ----> unspent
2. 1bbbbbbbbbbbbbbbtewt (second and second oldes in trezor)  ----> unspent
.....
10. 1kkkkkkkkkkkkkkkngjf (10th adress in trezor)  ----> unspent

all 10 each have 1 btc so 10btc total.

now after I made a 0.20 btc payment in trezor this is how it now looks when I check blockchain:

1. 1aaaaaaaaaaaaaaaatqwt this is completely spent, so all bitcoins are gone.
0.20 btc has been spent and gone to right reciever 0.80btc has gone to adress 1zzzzzzzzzzfda and is unspent.

1zzzzzzzzzzfda that holds 0.80btc is unspent but I can't see it in trezor over my btc adresses?
trezor still shows correct my balance 9.80btc (the remaining 9 adresses all are unspent)