Ratadrabik commander deck advice

Hi. Beginner here. Started to play the game 1 month ago. Made this Rata deck based on some videos and what I felt I like. Tried to stick to what everyone says about distribution: X land , X removal , X ramp etc.
Currently the main ones are 36 land, 7 removal (3 board wipe 4 single target) 6 ramp. CMC is around 3.5 I could bring it down if I chip on the expensive board wipe and replace with something else for example.

I probably would consider to put [[Farewell]] just how versatile is so on removal side I believe it would be acceptable, feeling vulnerable with 1 enchantment removal.

Can anyone point out some flaws that they think the deck would not work because of? So I can fix them please?

The playgroup is not serious ( I only played a couple of games), I have seen some expensive cards here and there, but probably everyones deck is around bracket 2-3.5

https://archidekt.com/decks/12934135/copy_of_ratadrabik
Most of the creatures are legendary have like 7 of them with good utilities that are not.