so i currently have some understanding of basics of networking layers and protocols -well above phyaical layer- but it is all theory can you recomend me some ctfs to gain some practical skills and close the knowledge gaps?may be some pcaps to analyze

Also i need too improve more in linux and bash.. I finished bandit and looking for some thing more advanced now..

I know Ctfs probably are not the best option for these but i am currently foucsing on gaining programming skills and don't want linux and network aspects to attrophy in that time