What software to use for manual alignment after automatic alignment on MAFFT?

I'm i my first year of masters, and I need to create a phylogenetic tree, i dowlowded the sequences in GenBank and automatic alignment on MAFFT, but I read that after I need to confering the aligment and make manual alignment if necessary. So I need some help on that. I have 6 molecular matrices with a range of 804 to 1058 bp.

I was reading a book that mencioned BioEdit, but i noticed that "BioEdit is no longer being regularly maintained", and i dont know if was safe to use it

(sorry if i misspelled, english isn't my first language).